DH and I are considering buying into DVC, but haven't decided on a home resort yet (90% sure we'll go with a resale). We'd like the opportunity to try all of the resorts at least once, but are wondering about availability in the 7 month window. We don't have little ones yet, so we generally travel when school is still in session. Most of our WDW trips have fallen in late April (when Easter falls in March), May, October, early November, and early December. Considering these are not usually busy vacation times for US families, will we have much difficulty booking in the 7 month window during these times?