I booked the photo tour. You are allowed your camera bag and tripod. This tour is less crowded than the lower/upper Antelope canyons. I traveled in February, which had snow in several areas. I was given more than enough time to capture images of the canyons. The guides wll assist you in pointing out the popular locations, but will leave you to explore what you find interesting. For photographers, book this months in advance. The photo tour cost more, but worth it when it comes to time spent in the canyons vs being rushed through with a crowd of tourist. Just so happen I was the only person on the photo tour during my time slot of 1pm. I suggest having the widest lens for those who are limited with what you can carry. I used a 15mm-30mm lens on a D/850 DSLR. I also people with tablets and cell phones capturing images. The guides give you tips to create great images. Port-a-poties are available at the entrance, and at the beggining of the walk into the canyons.
FITNESS WARNING: The walk down into the canyon is steep with stairs provided, but coming back will test your fitness level. There is a bench to stop and rest. (especially if you are lugging camera gear). If you take the photo tour, plan on being there about four and half hours (time to check in, drive to the site, walk from your vehilce, then a walk through the canyon!)