Why bother? They’re safe at room temperature unless they’ve already been refrigerated, might as well use that fridge space for some that actually benefits from the cold.
At room temperature they’re good for a month or two. If you want long term storage you might as well prep and freeze them which will last you about a year, or there’s a ton of other long-term preservation techniques.
Seems reasonable enough to me if you bought a ticket for a train which doesn’t have assigned seating, which is pretty common. Just choose your seat as you board the same way you would with a bus.