I went a few weeks ago and it had been pouring down with rain overnight and for a few days prior to that. Rain mostly held off whilst we were there.
Trails we did (most of the reds and blues) still ran fine – apart from one of the newer ones called Surfin Bird – I’d give that a miss if I were you as it was muddy and stodgy and not much fun.
You’ll still have a good day as long as you don’t get horizontal rain.
Uplift is fine once you’re on the bus – but we had a few long waits the other week which I hadn’t experienced before.
Tire wise I don’t think it matters too much what you have – I’ve been 3 times with 3 different brands /types of tire and none have been an issue.
Insufficient funds as mentioned above is really fun – just don’t get too over excited with the speed – there are 3 jumps close together about halfway down hay could catch you out if you carry too much speed. You’ll take off on the first one and smash into the up part of the next one, then even worse on the 3rd one! I only noticed this on the recent trip as I was carrying so much more speed.