If it ain't broke don't fix it.
You have the most important maintenance items covered.
I agree with bringing a spare bulbs.
You can go broke and change things that don't need changing when you overthink things.
A debit and credit card are your friend if the unforeseen would happen.
You can drive yourself crazy worrying about the "what ifs."
I can explain it to you, but I can't understand it for you.