Average wait is maybe 5 - 10 minutes. We normally end up waiting about 5 minutes or so (unless we have really bad luck and we just missed the bus by a second). I would say it takes about 6 - 7 minutes to walk from the lobby to the very back of the resort.
we haven't stayed here for like 8 years, but when we did the wait was pretty bad and it was a real trek from the room to the lobby, and when we went (flame retardent suit is on) the place was crawling with brazilians (late june/early july i believe). Wouldn't stay there again