I'm always very confused if I have to tip the person or not. Of course I do tip in restaurants, and I always tip in beauty saloon (and I pay the guy that helps me to load/unload the hay, BUT it's not really a tip but rather a pay IMHO), but other than that...? Do you tip for delivery? Trail guides? Anything else?
When I was working (well, I'd say volunteering as I had zero pay) as a trail guide I very rarely was tipped, and I never expected to be. So what about other people experience in similar situations?
If I'm not mistaken you don't tip in Europe because it's already included (I may be wrong though).