I am planning to spend one weekday overnight in the last week of May on Inish Mor, taking the last ferry (or next to last) from Rossaveal. I'll be leaving a rental car overnight at the ferry terminal. I like to travel light and hope to leave my suitcases in the car and back a small overnight bag. Questions: 1. Do I need to buy ferry tickets in advance (I'd like to be flexible) and 2. Is the ferry terminal in Rossaveal a safe place to leave luggage in the carpark? Thank you so much for any help or suggestions.