What rewards are available in Fishing Tournament

I have seen the future and the past. I have time traveled for hundreds of years (by adjusting my Switch system clock) and this is what I learned:

• There is no major effect. No nagging, no obvious penalties, despite what IGN said. Indeed, on the plus side, progressing into the future earns interest on your Nook Bank balance (in the ATM/ADM), maxing out at 99k bells at a time.
• No residents left town, in my case. Caveat emptor: I did this before actively recruiting new townspeople. For what it's worth, I ignored townspeople when I time traveled (man on a mission), which might have stopped the game from registering that I had "ignored" the residents. For example, if I progress into the future and talked to a resident, they'll remember that it's been weeks/months/longer since we last spoke, but once I returned into the past and talked with the residents, they wouldn't say anything about the time passed.
• I also didn't especially notice more weeds or anything falling into disarray, but that might have been because I traveled between winters, when snow covered the ground.
• Not specific to time travel but to putting down the game in general, if you haven't been "in-game" in a while, there may be changes that are not recapped in Isabelle's morning announcement, such as new residents who came and were ostensibly announced while you were gone.

in DIY For Beginners you receive:

 Ocarina

 Wooden-block toy

 Old-fashioned washtub

 Stone stool

 Frying pan

 Hay bed

In Test Your DIY Skills:

 Mini DIY Workbench

 Wooden-block chair

 Wooden-block bookshelf

 Wooden-block stereo

 Rocking chair

 Swinging bench

 Ringtoss

And in Wildest Dreams DIY:

 Plain Sink

 Wooden Fish

 Brick Oven

 Iron Wall Lamp

 Ironwood Kitchenette

 Hearth

If you already have one or some of the recipes in the pack, you’ll still receive the other ones upon purchase. Since the Nephews send these recipes directly to your phone, you can’t get their cards to give to someone else.