Been out with Ciclo Montana twice.
First year – Panaracer Fire XC Pros and had probably 1 puncture per day, with a couple of 'flat come the next morning' type punctures too.
This year I was prepared. I took some supposedly tougher tyres – Specialized Enduro with the Flak Jacket protection & seeing as those thorns definitely weren't gonna stop me I got some of those green slime tyre liners too, just to make sure.
Punctured more than last yr – at least once/day with the worst being 3x in a day. It was quite demoralising!
They all run tubeless out there & never seem to puncture so it does seem like the way forward. I would consider it in future.
Mark recommends Maxxis Larsen TT 2.3s (or maybe 2.35s) and a friend of mine used them. I don't think he had 1 puncture all week. Last yr I think he had at least as many as me. Probably too late to get some though it you are going on Thursday.
Just take loads of spare tubes and be prepared to sit with a beer by the pool at the end of the day repairing any ready for the next day.
Have a great time – I am not at all jealous!!