Upper Antelope Canyon is a very famous slot canyon in Arizona, and with good reason, the views are spectacular, and they are usually sold out every single day, we kept checking for availability starting a week prior to heading for Page, and by sheer luck we found an opening for the photography tour, three days prior to going there.

we did book the photography tour, because it is the only tour that allows tripods, and it was money well spent, in our group there were some people who hadn't brought a proper dslr, and a woman who kept using camera light and had to be told multiple times to turn it off.
half of our group vanished midway through, I guess they booked the photography tour in error