be prepared to only be allowed to play with their toys with very little input about your preference. if they are mostly sun but you prefer linux (then tough ****). or if they write everything in java-script and you think php would be better in a certain instance (then tough ****).
also, learn to cope with project managers like this (
nfsw):
https://www.youtube.com/watch?v=uRGljemfwUE