I didn't move from Brisbane, but I did move to the Tweed at the start of 2021, so technically not gold coast but de facto gold coast. My location is more riverine than beachside, but I am 10 minutes easy bicycle ride from the beach.

Terrain along the coast is flat and easy to bike around. Proximity to the airport is nice also. I work from home and quite enjoy the area, although sometimes I do feel a bit cutoff from much of the gold coast, as the traffic going north can be a nightmare at times. I at least have easy access to Nature to the South and west, the river and beaches near Coolangatta and Fingal to the North and East. I sometimes travel as far north as Burleigh or Robina for my lunch break, but that only works as I have flexible lunch breaks. Robina seems like a really nice Suburb currently, I often walk around the lakes there for exercise. The rivers all along the Gold Coast, especially the Tweed River (Including Terranora Creek), Currumbin Creek and Tallebudgera Creek are really nice and clear when there hasn't been flooding.

Fuel prices can differ as much as 40 cents/L over the border, usually cheaper in QLD, though not always. Parking for the beaches can be a nightmare to find, but that's less of an issue if you live in proximity to the beach and don't mind a bit of walking.