This works until one company monopolizes the market. See TripAdvisor.
I've worked with seven different resorts/hotels doing web-dev and every single one of them absolutely hated TripAdvisor and wished it didn't exist and they didn't have to be on it to survive.
Sign up for all of the services: OpenTable, Doordash, Amazon Restaurants, GrubHub, Postmates, everything. That way, when one service does something terrible, you aren't crippled by the single point of failure, and as long as it wasn't terrible enough to sever the relationship, you can take your time rectifying the issue.