There are shuttle buses that drive you around a loop along the South Rim. I’m sure they are wheel chair accessible but check ahead with the park. Also, at the South rim visitor area you should be able to get around with a wheelchair but double check with the Park.

We were on line for at least 30 minutes.

Oops restart. I’m a senior now but the first time I was at the Grand Canyon ,(I was 16) I hiked down The Bright Angel Trail on the spur of the moment with my cousin. We hiked down 5 miles and there were parts that if you tripped it could be over. What stands out in my mind was when a group would be passing by on mules we would be plastered against the inner part of the trail and would be looking up at the people sitting up on the mules with these 2 thoughts. *They say the mules are very sure footed, they never fall.(I really did see one trip a little) * as scary as the hike can be at parts, sitting On top of a mule looking down the Canyon has got to be nightmarish. Especially when you are on the outside edge of the trail. I personally would rather trust my own two feet. I would be concerned about younger children hiking the trail due to maybe their focus and coordination. Younger kids seem to trip or not focus on where they’re going at times. Maybe you can find a you tube video on people going down the Canyon with kids. Finally, then there’s the trip back up. Best Wishes and watch the weather. We started on a sunny early afternoon going down and ended coming back up in the rain. They do have flash floods in the Canyon. We were 16 with no plan but we didn’t trip.

I would suggest Taking Desert View Drive. It's about 25 miles along the south rim. There are several turn out where you can pull up and park you car to get out and take pictures. Most of the areas have dog walks.

I am sorry, but I have no idea.

You may have already done your trip. The South Rim is where all of the Park facilities are located. If you plan to stay and eat, other than a snack, stay outside of the Park. Don't discount the tours. We did a 6-1/2 hour tour on a 10-person van. Our guide from "Canyon Dave's Tours" was fantastic. She was an ex-Park Ranger and knew the history and where to get the best views. She even had hand-outs about the geology, etc. Canyon Dave, the owner, is a retired Geologist who studied the Grand Canyon and their tours are very detail oriented. You'd never find all of these things on your own, and they even suggested places for you to return, if you wanted to see more.

No problem. Handicap signs everywhere.

Yes, but limited.