I always put belly bands on Dino when I am taking him to visit anyone. It takes away the worry of him peeing at their house or on someone
(if he gets nervous). I get them from a YT member: LitlbitRanch
They are wonderful because you don't need to worry about them marking their territory at someones house. They need to be changed a couple times a day, I use the poise pads (average hold works fine), the 72 pack is like $10 but they sell 10 packs for just a couple bucks if you are only going to use it on rare occasions.
Good luck!