We just transferred our 2 yr old at Christmas into his new toddler bed, and yes, he gets up and wanders about his room. We, too, ignore it. He always manages to get back into the bed before falling asleep.
We did, however, have to put a gate on the outside of his bedroom door, because it doesn't latch, and he can open it. He was wandering around the house, which isn't okay for us.
The getting out of bed does make me a little nervous, since we're also expecting a 2nd this Feb, and I don't want him to wake up #2 at night. But then I realized the new baby will sleep in our room until he sleeps through the night anyway. If it becomes an issue when they're sharing a room, then we'll worry about it then.