Earlier quoted context omitted.
Yes, I think that if someone asked me to bring "wine or beer" to a party, literally everyone I know would be fine with me bringing a bit of both. In fact, what would be weird would be someone objecting to my bringing both on the grounds that they meant, but didn't say, "xor". I don't think this contract is ambiguous in natural language. Or is generally inclusive, and if you want xor you either write xor or use some c…
XOR is the natural use of or in English. Do you want to get subs or pizza? Are you going to vote for A or B? Logical OR is often written as ‘and or’. Do you want to see a movie and or get dinner? https://en.m.wikipedia.org/wiki/And/or That said it’s not a universal standard and like most of English has wide regional differences.
I would say OR is the natural use, and exclusion is implied by the context in these examples.