I tried going in with my level 78 character just to test the restriction. Yes it did not let me in, but would it be possible to make some changes to the dialogue? It just feels weird for the dialogue to lead right into the point where you're supposed to go in (the usual before the restriction) but of course, at that level, you're not allowed to, and the result is a dialogue-less block.
I wasn't around when the restriction was applied, but man, I'm just really happy to see Luna in use again. I had quite a grin when I saw a lot of people in Mana Snowfields.