Off to Bangkok in a few weeks' time, and this time I'm determined to have a decent glass of wine with a meal without paying rip-off prices.

So, I have two questions for the Thai experts:

1. Recommendations for reasonably-priced bars/restaurants (nothing luxurious) where I can get a reasonably-priced glass of wine, without it being complete plonk?

2. What stores are recommended for buying bottled wine, again at moderate prices - if such places exist?

Thanks for any advice you can give.