Well I've gone to Chatime more than thrice so here's more of my adventures with being a tea critic myself... I've been trying one different type of tea from another there. I really didn't care much about the non-tea products. Instead, I'm into milk teas or the non-milk tea products. Either way, I had much fun drinking them as a tea critic commenting on how each one clicks or doesn't click with me. Strangely enough as a tea critic, I've been giving the most complements to jasmine, matcha and sakura sencha as of the moment. But there will be more of my critiquing tea from where that came from. As a tea critic, I really suggest you try as many tea flavors as you can. At a businessman's angle, looks like cold tea is now the new click while selling coffee here also serves as a good substitute compared to overrated coffee shops.
Some of my random thoughts from a hyperactive mind!