Can I switch marinades/meats????
Sure, you can mix and match however you like. The veal will do well in that red wine marinade; the white wine may be a little subtle for the lamb, but it's worth a try. It'll be edible, even if it's not the most flavorful thing in the world, and you can chalk it up to experience if it doesn't work quite like you plan.
I certainly should experiment more!Thanks.