Hey mate,
I know APAT pretty well. It's in Newcastle next right? Thats my home town ♦
I guess you are perhaps a little nervous? There is an amazing restaurant next to the casino called Nandos, if you prefer Italians, El Nino's is next door, get there early, enjoy the atmosphere, get a drink/nice food and calm down.
The structure of APAT's is very good, you have lots of time to wait for hands and I'd recommend playing very tight early on and studying the players on your table, they don't allow professionals to play so there is doubt to be alot of "fishy" players, try and establish who they are and use this to your advantage later.
If you lose a couple of big pots don't panic, the structure is great and you can go for a walk around the casino and get back in the mindframe.
My friend, Maylis Boardman is the TV presenter there. Go find her (the blonde who stands out from a mile) tell her you're my friend and she'll look after you and maybe get you a TV interview which would be really cool, you could even give the pokerstrategy forums a shout out 
Let me know your name (by PM if you like) I will be checking out the updates (my friend Richard Prew - Tighty) will be doing them and I'll make sure to follow your progress.
Thanks
Patrick.