"Does anyone own their condos a few years prior to living there more or less year round, but visit, oh say for a few weeks at a time and rent it the other weeks? My thought was, is it feasible and legal to own a beach condo, rent it during high season, and then still spend a few weeks/year there too?"

That is the plan for us, although it will still be a few years (20 if we're lucky!). PM me if you want further info.