Ok wasn't sure when Boomerrang Bay closed I knew it was soon though. Sundays arent usually too bad probaly my guess would be about 1 hours wait for all the major rides but since it is a holiday weekend I would guess there would be even longer waits. So expect 1 hour 20 minute wait or so on most stuff like Face/Off, Dropzone, FOF, IJST. This is only a guess and depends on what the weather would be doing at that point in time