Last year my husband & I stayed at Playa Linda which is in the same area as Marriott Surf Club & we walked. It's not a very scenic route once you get out of the "busy restaurant" area, but it was an easy walk that we didn't think was unsafe & we found it no problem. (There were a few sandwich board signs near Buster's telling us to keep going). We LOVED Wacky Wahoos & will definitely return there in Oct.
Enjoy your first trip there! (Madame Janette's is a favorite of ours too & worth the cab fare we thought, though can't remember what that was!)