Congrats. I also just had one come out of the shell as I was typeing another post. I have 6 new babies.
As for not worrying about the eggs getting bumped around, When I went to look at mine about an hour ago, One of the spent shell halves had gotten stuck over one of the other eggs. I picked up the stuck shell and the egg it was stuck to had zipped all the way around, but the chick couldnt get out because it was stuck inside the empty shell from a chick that had already hatched. Chicks have hatched for centuries without mans help, but in this case, I feel that if I hadnt of been there to remove the stuck empty shell half, I would have lost this chick. Not something to get overly concerned about, but something you should be aware of.