RULES:. For a full detailed description of the Smash Ultimate Ruleset: https://www.ssbwiki.com/Tournament_rulesets_(SSBU)

Stagelist:

ALL HAZARDS OFF

Starter Stages Battlefield Final Destination Pokemon Stadium 2 Smashville Town and City

Counterpick Stages Kalos Pokémon League Lylat Cruise Yoshi’s Island (Brawl) Yoshi’s Story

Daves Stupid Rule (DSR) will be in effect. It's not listed by name in the official rules, but it's there. This just means that you are not able to pick the stage you last won on during that set.