We did the tubing with 9 people. It was good. They were on time, bus wasn't bad, drop off was easy, floated down the river, went to the end and turned in our stuff.
They didn't try to upsell stuff. They were nice. I'm a big guy and water was low but luckily I didn't rip the tube. They weren't sticklers either...
Recommendations:
Make sure your tube has enough air, ours was low (double one) and make the trip a bit more rough with the low water. They suggest being under 250 lbs
Water wasn't that cold in July in my opinion