It took a longer wind down for us, but only for a few weeks. DS climbed out at 20 months.
We cleared out his room too, but he can't open the door to get out. For a few weeks, this new freedom was huge for him and we'd hear him get out and explore...we'd hear some bangs and thuds too as he threw his books out of his bed and back in. This messed with naps and bedtime for a few weeks and resulted in some OT.
Now he still gets out, but crawls back in and sleepy times are back to "normal". So, the noveltly does wear off.