Maybe I will end up having the dealer do the first service after all. And then do all the subsequent ones myself.
In the UK you loose the warranty if the handbook is not dealer stamped with service intervals. Is it different in the USA?
Not in the US and hard to believe it’s that way anywhere. If you have the receipt from the work being done that should suffice. In the US you don’t even have to have oil changes done by the dealer during warranty, just proof it was done at all.