Learn English – Proper term for hiring fewer people than required

"Spa" would be an acceptable term, although it doesn't necessarily refer specifically to massage. It can include massage, skin treatment, aromatherapy, etc. Though it isn't specifically limited to massage, "spa" does hold the idea of non-remedial activity.

As @J. R. graciously pointed out, "salon" would also be correct. It shares the same strengths and weaknesses. That is, it does not refer to massage specifically, but to non-remedial relaxation in general. (It also includes hairdressing, and thus is slightly broader than "spa".)

Note that "massage shop" or "massage parlor" are sometimes used as euphemisms for a brothel. If you use these terms, be sure that you give them proper context.

I think it's first important to note for our ESL/EFL friends that one would practically never have a need to refer to one of these. (I personally don't ever recall hearing any name for this.) If one wants to ask for a bill in a restaurant, the answer is here: how should I ask for a bill in a restaurant politely.

This is the leather (or faux leather) folder that waiters/waitresses use to deliver the check/bill to the customer, who reviews the bill and encloses cash or a credit card back to the waiter. The following are terms used by several online restaurant supply distributors:¹

• Guest Check Presenter, Guest Check Holder
• Check Presenter, Check Holder
• Bill Presenter, Bill Holder
• Check Presentation Cover
• Bill Presentation Folder

Most people have never considered what this is called, but would likely use the following:

• (bill | check) + (holder | folder) ²
• So for example, if it was misplaced and separated from the bill, one might ask, "Where's the (black) bill holder?".
• If it was misplaced with the bill, one may simply ask "Where's the bill?"
• Another functional way people talk about something when their mind isn't focused is to describe it in terms of how it is used: "that black thing/thingy that the waiter brings with the bill in it."

Here are a few Google Results:

• Google Search "bill presenter" 189K results
• Google Search "guest+check+presenter" 86K results
• Google Search "check presenter" 31K results

This is similar to they way I sometimes describe the TV remote control to my wife late at night: "Darling, do you know where the channel changer is?" (Evidently I'm not alone on this with Google "channel+changer" "remote+control" at 14K results.)

^{1. www.bigtray.com, www.usaequipmentdirect.com, www.centralrestaurant.com, www.zesco.com, www.foodservicewarehouse.com}

^{2. AmE uses check or bill. BrE uses bill.}