First of all you have two choices, Upper Antelope Canyon and Lower Antelope Canyon, both in Page, Arizona. Both are part of the the Navajo Nation Tribal Parks and they both are only accessible by Navajo-Guided tours for a tour fee.

They were both closed for awhile during the worst of the pandemic as covid hit the Navajo tribes hard. Both are open again for reserved tours run by various Navajo tour outfits.

If you choose Lower Antelope Canyon, IMHO the best tour group to use and the original Navajo tour group is Ken's tours . They offer the standard tours, which last 60 minutes and can have up to 10-12 people in a group. Or you can pay a higher fee and get the Deluxe Tour, which is a max of six people and last 90 minutes. Ken's tour guides know all the tips to get the best photos .
https://www.lowerantelope.com/

There are no longer any dedicated photo tours anymore at either Upper or Lower Antelope Canyon. These dedicated photo tours took a lot of time as each photog with their tripod would set up for staged shots in the canyons as the guides would throw up sand into the beams of light coming down. It just wasn't cost effective anymore to do for the tribes, as it was clogging up the canyons and reducing the number of tours possible each day.

No worry as you can still take your camera, but no tripods allowed. You can easily make great shots handheld in either canyon. I have done both and they are each bucket-list worthy, with or without the crowds.

For Lower Antelope Canyon you will need to be able to descend down some steps into Lower Antelope Canyon and then you will slowly navigate with your guide through and back up out of the canyon. For Upper Antelope canyon you will enter at ground level and walk through with your guide. If any in your group have physical issues, then Upper could be easier to do. I did Lower with no problem at age 69.

I will post shots from Lower first, then from Upper.

gwilliams6 is correct that you do not want to change your lenses in the canyon even if you own a Olympus or Panasonic camera. A wide angle zoom is your best option for either canyon. A gwilliams6's pictures are a great example of what is possible. If you do not have a lot of IBIS or ILIS, practice your best handholding techniques and possible brace yourself against the canyon walls. Your may need to increase your ISO in the darker areas of the canyon and shoot at your widest aperture. And have fun while you are there. And be sure to take your eye away from the viewfinder and truly enjoy the beauty of the canyon. Capture some of it with your camera. I have only done the upper canyon and still need to do the lower canyon. And gwilliams6 is right: take the photos now because I do not even know when I will get back.