It looks like a good opportunity to take some cool snaps but i can imagine it being so busy or crowded that the displays would be a bit ruined, similarly to the Christmas light displays at Kew are ruined by having people crammed in shoulder to shoulder as they walk through.
They have expanded the event over a several places, so it may not be as busy later after all the worker bees have gone back to their hives.
Did you go to the first one?