The ’90s are back, baby — and they’re booking sold-out arena shows. In one night on one stage, Orlando will host three bands that helped shape alternative rock: Weezer, the Flaming Lips and Dinosaur Jr. They’re here for what headliners Weezer have dubbed their “Voyage to the Blue Planet” tour, marking the 30th anniversary of their first record, self-titled but lovingly known as the Blue Album, which they will be playing in full.