Lawberry Camp was scheduled on purpose to coincide with ALA Midwinter taking place in Boston, with the thought that it might draw people who are already in town for that, but it's not part of ALA Midwinter.

You also don't need to be a member of any organization to attend! Lawberry Camp Midwinter is independent and not officially affiliated with either ALA or AALL. (Although there was a Lawberry Camp day at AALL last summer and there will be another one there this summer.)