Does anyone out there know if it will be okay to leave a rental car at the Chiquila ferry parking lot for 3 days? We are staying on Isla Holbox and don't need a car there, but I believe they do have a car ferry.

There car ferry runs like once/month or something....very rarely. Most locals, if they have car, keep it in Chiquila since everyone drives golfcarts on Holbox.

There are places to park at the ferry landing. I'm sure someone will direct you; I saw plenty of covered parking. We took a transfer since we weren't going to need a car.