Bike park wales rides awesome no matter wet or dry so you'll have fun.
Start off on sixtapod and willy waver to get warmed up. They are both rated blue but are insanely fast, especially willy waver. Terrys belly is ok, but lame comapared to the rest, still worth a go. Melted welly is another fun blue, along with blue belle. The problem with the blue routes are you think there lame and tame so you ride them stupidly fast and thats when you get caught out and have a nasty off, so be vigilant and careful! Last time I went to bike park wales I was on the first uplift bus and someone had a nasty off on sixtapod because of the speed and that was his day finished, an ambulance come and took him away! what a waste of time and money!
Wibbly wobbly is probably the easiest red there, its rocky and fun with a tiny path gap jump. Viscous valley is a very technical red with off camber roots and some mega steep switch backs.
Coal not dole and pork belly are my favourite blacks, to be fair they should be red not black.
A470 is a jump junkies dream as its just a downhill track littered with tabletops, there must be over 20 jumps on it.
I like bike park wales as its mega fast but not that technical comapared to the likes of forest of dean. The tracks are hardpack so weather doesnt make much difference, you'll still be smiling ear to ear in the rain.
The uplift vans have an hour break at around 1 so the cafe is mental rammed during the break, take a pack up if you dont want ques, though the food is nice and worth a que.