The east coast is pretty big, can you narrow it down? Also are you driving from Ohio to the coast? If so, it is a short detour off the Thruway to Penn Yann, in the fingerlakes of NY. Golden Lane in Penn Yann (one of my favorites when I am in the area) is very reasonably priced.
I haven't been in years, but Keepsake quilting in Center Harbor NH is pretty impressive. But that is still a ways from the coast. From what I can tell, it was on shaky ground for a while when it changed hands but apparently it has changed ownership again and the new owners are more engaged with the quilting community.
Often you can google quilt shops in the towns you plan on visiting and find possibilities that way.
Sounds like a fun trip.