The first is pomegranate juice.
This healthy juice makes a really good and refreshing thirst quencher!
The second one is mandarin orange juice.
As you can see, the seller cuts the oranges and squeezes the juice right before your eyes, so you do know that they are fresh mandarin orange juice and not some bottled-up juice with preservatives. Thirst quenching and healthy too!
Do try these two drinks next time you go Bangkok!