I have worked in both and spent long periods of time in both due to work, building powerlines and substations
Toowoomba the work there is construction and mining it is booming but mainly as a central destination for FIFO to the coal fields. Closest sailing would be the Brisbane Valley dams which are not great unless you sail a cat . Windsurf and Kite your looking at 2 hours tops to get wet . If your work is hospitality you would only need to know how to cook steak and a B and E burger with barbecue sauce. University is good with good reputation. Things to do on the weekend sink piss and watch the v8 or league mention afl and your out (though you should be studying) .

Its a country town so wear lots of RM Williams and know how to put a bet on. Jokes aside if you have a young family its quite good and family friendly with plenty of sporting clubs and what not, but if your single i would think it would be horrible. Weather is mostly sunny with scattered shows and does get cold in winter different to the rest of QLD it stays cold all day . Like 0 in the morning and 10 during the day .
Fraser Coast hands down for Windsurfing Kiting and Sailing little surf some on Fraser Island but you need to worry about things in grey suits especially around Taylor season . It does have a high unemployment rate though. If you are looking into the Hospitality industry you would target the resorts for work maybe check about the islands. Tafe are generally scattered around at Hervey Bay closest UNi would be the Sunshine Coast. Bundaberg is basically Toowomba but with access to really good sailing . Hervey bay sucks a little because its tidal but once you have sussed the area no big deal in fact you would be sailing the same areas if living in Bundy. Night life is rubbish but you tend to live a outdoors lifestyle with the fishing sailing diving ect . Weather is mostly sunny with the odd storm and cyclone its hot and muggy at worst but very mild winter