Texas Roadhouse Grill with folks

i just wanna share the food we ordered one time at Texas Roadhouse Grill in El Pueblo in Ortigas Center, Pasig City. i already converted my Texas Roadhouse Grill gift certificates to a delectable meal.

i never thought that we ordered much and we were just three who will eat them. GCs were enough to cover all food but i added almost Php 500 for the VAT and service charge. isn't it that it should already be included in the menu price? what do you think? but i just figured out that we should reward the good service of the crew from Texas Roadhouse Grill and not just enjoyed everything for free. but Php 500 for tip? that's a lot!