I pretty much have the same setup as when we were walking in Geneva. My 5d mk2 together with my 17-40mm, attached to a tripod. You can never leave your tripod on trips like this as you have limited lighting indoors. I had to bump my ISO to get a fast shutter speed indoors as I didn't want to use a flash. Basically I had to set my aperture to the maximum my lens can handle which is f4. The lighting inside the resort is what you'd expect...a lot of tungsten lighting. I had to correct the white balance a bit in post processing although I didn't wanna overdo it, so I did leave the white balance on the warm side, it did however cut the overly yellow light a bit.
It was a very pleasant trip. I am pretty sure we'll be back there anytime soon!