I asked Tiffany and she said it depended on so many things, traffic, time spent out on the lake how long the guide takes, how long you take, rush through or take your time etc. Expect to be gone between 4 - 5 hours. So if you leave at 7.30 am you will be gone until 11.30 to 12.30. This could run over of course or you could get back earlier.

You need to be back from any excursions to go on the sunset cruise at 4.30 pm.

Just remember it will be hot and you will be doing quite a long trip that morning for four corners. Just dont book yourselves into exhaustion.

These things can all be booked at the hotel when you arrive. There is a big group there but I would imagine that they are used to that as it is a big convention type place with all kinds of conventions taking place here. There are many tour operators offering these type of excursions so I would imagine (BUT CANNOT PROMISE) that there would be availability to book once you get there.