Papaya and pineapple were staples for us. They have great ice creams bars with dark chocolate in the center. The restaurant and street vendor food is superb and some is very unique. It has indentations for your feet and no seat. They are somewhat of a challenge to use on a rocking train.
Many places have the standard porcelain sit down model.
Toilet paper was readily available as was everything from tampons to toothpaste. We found that the stores had whole camping departments with all the basics. They carried both the puncture type Gaz cans as well as the newer screw cap containers. Friends who had gone over before had trouble with extremely dirty fuel clogging up their multi-fuel stoves. Everyone drinks bottled water.