Any hints for first time PS 500k

im playing in the 500k on sunday at Poker Stars... this will be my first deep stack tournament, and i was wondering what i need to do different from the standard $10 and $20 1500 chip tourneys....like is a standard opening raise gonna be the same (like 5xbb +Limps or whatever), or should i open for more, and any weird tendancies or anything i should lookout for... im pretty confident in my tournament game, but i was just looking for some tips from all you experienced 2+2'ers out there...
good luck.. see u on the tables..