I agree... there is a major stereotype in the American Tourist... usually loud, uninformed, overbearing, uniformly dressed in polo shirt and khakis... Usually found pontificating in front of some tourist destination about said destination but getting it all wrong.
Whenever I travel abroad (which is quite a bit) it is inevitable that I will see this person, his wife and brood of simulacra (or children).
The other accents:
Upstate New York... I just think Tops Friendly Markets and Fires in Cheektawaga and Tanawanda...
Deep south... redneck
Ivy League Mass... snooty wasps...
These stereotypes are what first spring to mind when I hear the accent... thankfully I am mostly proven wrong when I actually meet and speak with these acccented poeple (except for the Tourist that is...
)