[SalesForce] Speed Up Page Load Time

I am trying to decrease the page load times on my two visualforce pages. Both of them are pretty simple queries, I am not sure why it is taking a long time to load each of the pages.
The main one I am concerned about is this one:

The controller:

public class EZCampaignEditorExt{

    public EZCampaignEditorExt() {
    }


  //  String Qmain = 'Select Id, Topic_Name__c, Name, Status, Expert_Cost__c, Moderator__c, Expert__c, GRI_Event_Type__c, Call_debit__c, Call_date__c from Campaign';
    public list<Campaign> PrevWeek = [Select Id, Topic_Name__c, Status, Expert_Cost__c, Moderator__c, Expert__c, GRI_Event_Type__c, Call_date__c from Campaign where Call_date__c = Last_Week Order by Call_date__c ASC]; 
    public list<Campaign> ThisWeek =[Select Id, Topic_Name__c, Status, Expert_Cost__c, Moderator__c, Expert__c, GRI_Event_Type__c,  Call_date__c from Campaign where Call_date__c = This_Week Order by Call_date__c ASC];
    public list<Campaign> NextWeek =[Select Id, Topic_Name__c, Status, Expert_Cost__c, Moderator__c, Expert__c, GRI_Event_Type__c, Call_date__c from Campaign where Call_date__c = Next_Week Order by Call_date__c ASC];

    public PageReference save(){
        update PrevWeek;
        update ThisWeek;
        update NextWeek;
        PageReference pageRef = ApexPages.currentPage();
        pageRef.setRedirect(true);
        return pageRef;
    }



    public list<Campaign> getPrevWeek(){
        Return PrevWeek;
    }


    public list<Campaign> getThisWeek(){
        Return ThisWeek;
    }

    public list<Campaign> getNextWeek(){
        Return NextWeek;
    }

}

Here is the VF page:

<apex:page Controller="EZCampaignEditorExt">
<apex:form >
<apex:commandButton value="Save" action="{!save}"/>
<apex:pageBlock mode="InLineEdit">
<apex:pageBlockSection columns="1" Collapsible="True" Title="Previous Week">


<apex:pageBlockTable value="{!PrevWeek}" var="Pweek">
<apex:column headerValue="Call Date">
<apex:outputText value="{0,date,E '-' MM'/'dd'/'yyyy}">
    <apex:param value="{!Pweek.Call_Date__c}" /> 
</apex:outputText>
</apex:column>

<apex:column headerValue="Name">
<apex:outputlink value="/{!Pweek.id}" >{!Pweek.Topic_Name__c}</apex:outputlink>
</apex:column>

<apex:column headerValue="Expert">
<apex:outputfield value="{!Pweek.Expert__c}" />
</apex:column>




<apex:column headerValue="Status">
<apex:outputfield value="{!Pweek.Status}"></apex:outputfield>
</apex:column>

<apex:column headerValue="Expert Cost">
<apex:outputfield value="{!Pweek.Expert_Cost__c}"></apex:outputfield>
</apex:column>

<apex:column headerValue="Moderator">
<apex:outputfield value="{!Pweek.Moderator__c}" ></apex:outputfield>
</apex:column>

<apex:column headerValue="Event Type">
<apex:outputfield value="{!Pweek.GRI_Event_Type__c}"></apex:outputfield>
</apex:column>

<apex:column headerValue="Registration">
<apex:outputLink value="/apex/GRIRegistration?id={!Pweek.id}">Registration</apex:outputLink>
</apex:column>

<apex:column headerValue="Attendance">
<apex:outputLink value="/apex/GRIAttendance?id={!Pweek.id}">Attendance</apex:outputLink>
</apex:column>


</apex:pageBlockTable>
</apex:pageBlockSection>

<apex:pageBlockSection columns="1" collapsible="True" Title="This Week">

<apex:pageBlockTable value="{!ThisWeek}" var="Tweek">
<apex:column headerValue="Call Date">
<apex:outputText value="{0,date,E '-' MM'/'dd'/'yyyy}">
    <apex:param value="{!Tweek.Call_Date__c}" /> 
</apex:outputText>
</apex:column>

<apex:column headerValue="Name">
<apex:outputlink value="/{!Tweek.id}" >{!Tweek.Topic_Name__c}</apex:outputlink>
</apex:column>

<apex:column headerValue="Expert">
<apex:outputfield value="{!Tweek.Expert__c}" />
</apex:column>



<apex:column headerValue="Status">
<apex:outputfield value="{!Tweek.Status}"></apex:outputfield>
</apex:column>

<apex:column headerValue="Expert Cost">
<apex:outputfield value="{!Tweek.Expert_Cost__c}"></apex:outputfield>
</apex:column>

<apex:column headerValue="Moderator">
<apex:outputfield value="{!Tweek.Moderator__c}" ></apex:outputfield>
</apex:column>

<apex:column headerValue="Event Type">
<apex:outputfield value="{!Tweek.GRI_Event_Type__c}"></apex:outputfield>
</apex:column>

<apex:column headerValue="Registration">
<apex:outputLink value="/apex/GRIRegistration?id={!Tweek.id}">Registration</apex:outputLink>
</apex:column>

<apex:column headerValue="Attendance">
<apex:outputLink value="/apex/GRIAttendance?id={!Tweek.id}">Attendance</apex:outputLink>
</apex:column>

</apex:pageBlockTable>
</apex:pageBlockSection>

<apex:pageBlockSection columns="1" collapsible="True" Title="Next Week">

<apex:pageBlockTable value="{!NextWeek}" var="Nweek">
<apex:column headerValue="Call Date">
<apex:outputText value="{0,date,E '-' MM'/'dd'/'yyyy}">
    <apex:param value="{!Nweek.Call_Date__c}" /> 
</apex:outputText>
</apex:column>

<apex:column headerValue="Name">
<apex:outputlink value="/{!Nweek.id}" >{!Nweek.Topic_Name__c}</apex:outputlink>
</apex:column>

<apex:column headerValue="Expert">
<apex:outputfield value="{!Nweek.Expert__c}" />
</apex:column>

<apex:column headerValue="Status">
<apex:outputfield value="{!Nweek.Status}"></apex:outputfield>
</apex:column>

<apex:column headerValue="Expert Cost">
<apex:outputfield value="{!Nweek.Expert_Cost__c}"></apex:outputfield>
</apex:column>

<apex:column headerValue="Moderator">
<apex:outputfield value="{!Nweek.Moderator__c}" ></apex:outputfield>
</apex:column>

<apex:column headerValue="Event Type">
<apex:outputfield value="{!Nweek.GRI_Event_Type__c}"></apex:outputfield>
</apex:column>

<apex:column headerValue="Registration">
<apex:outputLink value="/apex/GRIRegistration?id={!Nweek.id}">Registration</apex:outputLink>
</apex:column>

<apex:column headerValue="Attendance">
<apex:outputLink value="/apex/GRIAttendance?id={!Nweek.id}">Attendance</apex:outputLink>
</apex:column>

</apex:pageBlockTable>

</apex:pageBlockSection>


</apex:pageBlock>
<apex:commandButton action="{!save}" value="Save"/>
</apex:form>

</apex:page>

Should I investigate maybe using AJAX?
All suggestions welcome.
Thanks in advanced.