That's about it. Park it under a tree, where possible. Milano looks great when it's in good condition, so as long as you're happy to take a bit more care of it, it's probably worth it. More modern paint also doesn't suffer from this as badly as older paint did, so as long as you do the maintenance it won't end up looking like an early-nineties Commodore. Plus a car cover when parking it at home will make a big difference.