Shot handheld - E5 with 12-60mm (which apparently does decent macro).
I brought my 400mm, but the bus was running so slow that day, it would have taken over an hour to fetch it fro the hotel and then head to the conservatory before it closed.
Nothing has really changed since I visited in 2007. Same layout... same species. Same displays. Same expensive admission ($13.50).
Takes about 15 minutes to walk through. 30 minutes if you are photographing. Gift shop is just as big as the conservatory. Garden outside is always nice, but in the heat of summer, there's really nothing at full bloom. My guess is that in spring, it's easily an hour or more if you want to photograph flowers.
More to follow...