Every damn one of the folks here are quietly saying "there but for the grace of God go I" so that is the real reason for the compassion, or what seems like compassion.

There is nothing structural in your damage unless in driving it off the island you twisted the bay structure. I'm looking at your photos and what I see is a need to strip the affected compartment(s), jack out the deformation, maybe cut and weld the more severly twisted structure, replace the skins and then start work on the Aquahot.

The repair shops will make it seem like a bigger deal, but it looks like it is an easy fix relatively speaking. If it included a lot of systems plus paint then it would have been a serious oops. Don't let your insurance company take it anywhere but a Prevost shop. They are about to learn about bus conversions and I hope you don't get victmized again.