I have eaten at Hot Wok for many years now, and I will keep going back. The portion size for what you pay is wonderful. You often get two meals for the price of one, and paying the little bit extra for two different toppings is well worth it.
Two of the best days are Tuesday for Beef Curry Day and Fridays for Coconut Shrimp Day. Both of these are excellent and worth saving a special day to have.
The regular dishes are great too. I love the chicken and green beans, the General's chicken, and cashew chicken.
Going around a set meal time will ensure you always have fresh food. However, this place isn't one to let lots of food sit around so even at an off time you are going to get something made pretty new.