There's lots of things to do in Airlie Beach completely free day and night. Even more things to do if you have some money to spend.
I just got back from Australia and here is what we did in Airlie Beach that gave us a good time:
Sunbathing on Airlie Beach
Airlie Beach Lagoon
Cedar Creek Waterfall
Snorkeling in the Bay
A thrilling speed boat ride
A walk to Whitehaven Beach
You can see 12 more things to do at Airlie Beach at whitsundaysdeals.com.