This is the tour to go if you want to see all three main attractions. It is a long trip with an aggressive itinerary in the heat, the description is accurate and thorough in prepping you what to expect, and emails from the operators prior to the trip are great if you've any follow up questions. Know what you signed up for, don't be one of those people complaining about the heat, the "hiking" (a hilly walk at best), the long ride etc. Yes most of the hours is riding on the bus in between locations but that's just what it is if you want a compact itinerary and see the places in a day. You will be tired and sore from all the sitting even with pit stops every two hours, no way around that, so bring things that will make your ride more comfortable. I suggest an extra layer to cover up and shorts to change into for the temperature differences as you go through the day. Lunch is provided as a basic boxed sandwich meal but there are plenty of pit stops during the day where you can grab drinks and snacks.
You will be walking in peak afternoon sun without shade for about 30 minutes at the Horseshoe Bend location, again just how it is. Other locations will be at cooler temperatures of the day or with sufficient shade to duck into occasionally, like Antelope Canyon X. Antelope Canyon is operated by the Navajo jurisdiction that enforces their own rules for Covid safety and preserving their lands, again it's in the description so be prepared and more importantly, be respectful.
Cleanest tour bus I've ever been on, guide are great at showing the best photo spots at each location and being great photographers. They did their jobs to make sure we were comfortable given the circumstances and ensuring we get to where we need to be over the day.