Yes - I do now think the "air pressure" switch in question is related to the hot tub (although the seller hasn't specifically said yet, but that makes sense). It is a small fiberglass pool insert with a circular "built in" jetted hot tub on one side. I see in the inspection pictures that the hot tub switch (which I presume at this point to be the air pressured switch in question) is on the exterior wall of the stand-alone pool pump shed about 8 feet from the pool.
Anyone see a reason the air pressure switch for a hot tub wouldn't be GFCI compatible? Or know if a hot tub air pressure switch can be converted to some other kind of switch?
To clarify others' questions/statements...yes, the pool has been professionally inspected and that is why we brought the GFCI issue to the Seller. The Seller's agent is relaying the "incompatibility" issue to our Buyer's agent on behalf of the Seller. In turn, our Buyer's agent forwarded the statement to us. The seller is fully in the loop and initially agreed to installing the GFCI outlets in the pool shed, but when their handyman/electrician/pool guy (??) went out to do the job they said it couldn't be done because of the "air pressure" switch.
Please note, this issue is in the USVI...so they're a bit looser down there, but do for all intents and purposes follow US mainland (specifically that of the southern states per our inspector) building code. I came to this forum so I could come back to the seller with an educated response because I know logically what they are saying doesn't sound right, and you are all being super helpful - thanks! Keep your thoughts coming!