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You're a good guy Windsurf...everyone likes to feel appreciated!
I gave my CalSpa tech a Chili's Restuarant gift certificate just as a "Thank You" and so he would remember me if I ever needed any help in the future. After giving him the Chili's card....I asked for his cell phone number and he gladly gave it to me and said "call him anytime".
That's awesome. I have a few customers that go out of their way every year around Christmas with thing like that, as well as cookies and (my favorite) the occasional bottle of Crown! In the summer time, when we are primarily working with pool customers, we get little things here and there as well. I'll be honest, it's the little things that can really make my day as well as that of my staff. Kudo's to you!!!