It was at varying times, fun, interesting, surreal and cold.
I go the wrong train to the airport (after Primavera) and found myself in an unnamed town, kinda plush, really nice beach. I couldn't be bothered to shell out 90 euros for the hotel, so I just hung around the beach until the trains began to run in the morning. It was definitely one of the most surreal moments of my life, watching the sun rise on my own, reflecting, getting paranoid that some drunks were gonna beat me up, thinking about movie references, listening to Adore by the Smashing Pumpkins.
Have you got into any similar scrapes, and did they turn out not ok?