I just need the map and tokens

I'm planning on running the game mostly the usual way, only using Roll20 to show the map with fog of war, to use tokens to represent the characters and bad guys, and for the players to move their character tokens around. No dice rolls, no special effects - my players are trustworthy enough to do their own rolling and keep track of stuff. Is this a possible thing? I've never used this program, I just got the map set up, and I'm really nervous about doing this wrong. Any help would be greatly appreciated, even if it's just 'Yes, you can do this' or 'No, and here's why'.

Yes, you absolutely can use Roll20 just for the maps and tokens. Just make sure you double check that the players can control their tokens and you should be set. Also, your first session will probably be bumpy because everyone will be a bit unfamiliar with how everything works. Be prepared to help your players in this regard. Don’t worry, though, because I’m sure they’ll get used to it pretty quickly.  Have a nice game!