I will be in Budapest later this summer for 2 1/2 days (arrive on a Wed at 13:00 at airport and depart from airport Saturday 10am. I plan to take the 100E bus both ways.
I expect to walk a lot so considering just buying tickets for trams as needed on the go. I'll be staying near Opera House.
For single tickets, I understand they are only valid for one uninterrupted trip. Can I just buy on the app and validate when boarding? Can I purchase a few at once and just validate each ticket as needed? I'm concerned of not getting internet on phone when out and about and not able to purchase a ticket. I do have eSIm for travel but sometimes even that fails.
But I am also considering getting the 72 hour pass which makes things more convenient. In that case, do I still need to "validate" before boarding each time?