The old Don Mueng Airport in Bangkok was reopened for budget carriers and is currntly being remodeled. Terminal 2 with Thai Air Asia and Nok Air offers various shops and cafes for waiting time apart from the mostly crowded gates. I love to fly early in the morning to avoid crowds.
Cafes in DMK: http://bangkokcafe.tumblr.com/
The renovated terminal 2 of Don Mueng Airport is more crowded than on those pix. I guess they were taken during early morning around 5 am when there are almost no poeple.