Maroochydore is the biggest centre on the Sunshine Coast, incorporating some walled up beach breaks and pockets of reef leading down to Alexandra Headland. Avoid the central beach masses by checking places like Pin Cushion behind the caravan park next to the Maroochy rivermouth. WSW winds, all tides and nice SE swell should see some hollow peaks.
Biggest town equals biggest crowds. Other side of the river will be much quieter.