With the time constraints, I weighed the options, and the hotel was posh, so I asked if I could look around for locations. They were happy to do so, and the solution was definitely not something I would have come up with without walking around and scouting with my camera:
In their executive suites, they have brushed chrome refrigerators. I did the shots as extreme close-ups, with them seated in front of the fridge. With some very minor fill lighting, I was able to make it look really cool. You certainly can’t tell what the background is: it’s just an aesthetically pleasing, silver-toned neutral background with some minor color variation thanks to the brushed texture and the lighting.
The reminder that what’s not in the frame doesn’t exist was just what I needed. Thanks again to everyone!