Kim Su Seafood Restaurant in Westminster has been around forever. They are located on the corner of Bolsa and Ward. It used to be the place to go for dim sum on Sundays. Dragon Phoenix has them beat in that department

They have a very big dining area, good for weddings and dim sum carts. We usually go here when the others are too busy. Every dim sum restaurant carries a few items that are different.

They do accept credit cards. We know because that's all we had in college.