hmm... then i hope u don't get bad influence from your platoon
mates. cos as the rest pointed out, u will be spending your 2 years
in the same unit with the same people. and one will easily learn
bad influence like smoking if one is not careful.
but nevertheless, try to blend in with them, just leave out the bad
habits. hopefully u will be able to make friends there cos with
friends by your side, training and exercises won't be so
boring.
good luck and all the best.