The company is based in europe, they do ship worldwide, and for the travel service it doesn't matter either.
But € is fiat!!!
That's just the unit of account, payment is in Bitcoin, lightning too
Well what's keeping them from using Bitcoin as the unit of account then. It's a bit like traveling to Mexico and having to do the conversion in the head all the time.
Because the actual products you want are denominated in fiat. I guess they could show the Bitcoin price, and update it every minute...