I've *never* had housekeeping "push back" and I've requested extra sheets on at least 6 visits. I guess it doesn't hurt to bring your own set of sheets just in case, but I'd much rather use the resort supplies so I don't have to worry about washing sheets during my vacation. I also don't want to have to worry about housekeeping accidentally taking my personal sheets. A friend of ours took their own blanket for the bed -- just a plain dark green blanket purchased at
Walmart for the trip -- and it disappeared from their room when housekeeping changed their bedding one day. It was nothing fancy, so I don't think it was a housekeeper stealing it. I think it got wrapped up in the pile of bedding for the room and accidentally got mixed in with the resort laundry...even though it was a completely contrasting color. Also, a lot of resorts now have rolling supply cabinets with sheets, towels, and other supplies out in the hallway for at least a portion of each day so guests can grab what they need. I don't know if they do this at every resort, but I definitely saw it at AoA (suites), Pop Century, BWI, and AKL in 2022 and 2024.
The air mattress is a good idea.