Doing 29 days in France and Germany, looking at sims since the world sim I kept going for some years went defunct during Covid. Old phone so no esim - found a 14 day Orange Holiday that looks like it would work topped up to keep it going for the whole trip which requires registration. Then I found I could get a google Fi sim for which the cost for a month would be about the same as Orange with the top--up. But, with the old phone thing I wouldn't have network switching so restricted to T-mobile.
I'm not really ready to spring into a new phone/technological experience to open up more service possibilities. I'm inclined to go with Orange but thought I'd check if there are might other options I'm not picking up on for a physical sim with a 30 day service period in France and Germany (I did find some 3UKs but in the event I do need to top up for data that looks problemmatic).