Transition from toddler bed to full size bed - is a regression ahead?

northernvabride

So DD#1 has officially moved into her new room and full size bed as of last night.  We haven't told the girls about the baby yet, so there wasn't a bitg explanation on the move, but she didn't mind getting a new and bigger room.  She had been sleeping in the toddler version of her convertible crib, so it was smaller and had a half-rail.  She did really well last night after she fell asleep, but she went to bed an hour later than usual, which I was not a fan of since it made her super cranky this morning.  (She was busy checking out her new room and playing in the bed)  I have heard that kids sometimes do great the first night and then regress.  Should I be worried about tonight, or was one successful night a good sign that she will be ok sleeping in her new room?