They charge before they even serve you so since I had a credit card a tip wasn't possible but that's their fault. I didn't bring any cash with me. If you want a tip you should charge at the end of the meal like everyone else. The portion was small for the price. It was almost $10 for a small bowl of red curry tofu with rice. I was hoping the portion would be way bigger after reading the reviews. I guess it was sort of normal size for Thai places in Arizona. I got the red curry tofu Aka Kang Dang Curry and asked for it to be extra spicy. They weren't joking around when it comes to how spicy it was. This was probably the most spicy thai dish I have ever had. I loved it. It had a different taste than any other Thai place I have been to, couldn't figure out what the taste was that was different but it was a good different. I guess it didn't have as much of a coconut milk taste as other places do but somehow it was even sweeter, maybe it was the pineapples in it. I don't recall if this dish ever came with pineapples anywhere else. They put a peanut sauce on the salad on the side, I'll ask them not to put it on it next time I come. Maybe I won't ask for it to be so spicy next time cause wow this was extremely hot. I loved the dish and will be coming back. The cashier/server was nice. Her name was Pia. She checked up on us to see if the food was alright and if we wanted more water. Nice little restaurant.