Compare prices before you buy. Yes I love Thai food. But explore further into the voluminous menu, be unafraid to try new things, and you'll often be pleasantly surprised. Look through the listings of soups and noodle dishes for things that might seem exotic and interesting, and don't be afraid to gawk at your neighbors' food and ask them what they've got.
Folks seem friendly enough in here.
Sanamluang is open late, usually at least until 3 if not 5am. In fact, it only starts to get really busy after 10pm or so, and I must confess that I've rarely been there during daylight hours. But they serve lots of other interesting drinks too, which might catch your eye as they go by on their way to other tables. Sanamluang's open late late late, they're cheap, and their food is fantastic.