In many European cities, the tram operators run with their interior lights off in the daytime when they are on the surface. You can request the tram operator to turn the interior lights on if you feel you need them to find your seat. But I think that most tram operators hold the trams still until the last passenger is seated so that way they don't fall. If I was a tram operator and saw you, I would make sure my interior lights are on. Last thing you need is to have your vacation to be interrupted by a trip to the hospital.
Seniors are just antique people rich with history.