XZ-1: Best settings for touring?

Hi all,

I'll be visiting Italy and Paris early September. Heading to the big 3 on my honeymoon - Rome, Florence and Venice. I suppose it'll be too early in autumn to catch any autumn colours (which would be a big thing for me because where I come from we don't have 4 seasons).

But in any case, I'm guessing the most part of our photos will be within these cities. I haven't had too much time to work with the XZ-1 since I got it, so are there any recommended settings that will work best for this sort of scenes?

I've read somewhere that some recommend Underwater SCN setting for more vibrant colours. Is that really true?