Not sure where on the east coast you're headed, but there are several nice nurseries that I know of in the southeast. Favorite is the Orchid Trail in Morrisville, NC. The collections greenhouse houses over 3000 orchids of many, many genera and is my heaven away from home.
There is not much going on in that time frame, but Parkside Orchid Fest is worthwhile. I am not selling there, but I will be there most of the day Saturday.
__________________ Kim (Fair Orchids)
Founder of SPCOP (Society to Prevention of Cruelty to Orchid People), with the goal of barring the taxonomists from tinkering with established genera!
I am neither a 'lumper' nor a 'splitter', but I refuse to re-write millions of labels.