Here's the deal - Thai cuisine goes along the same scale as the seasons: Hot, Hotter and Hottest. The reason is that food hygiene is a relatively uncommon term in this part of the world and so chilli is added to kill bacteria. Or so my philosophy goes (at least until someone gives me reason to re-evaluate it).
So don't go to Thailand if your stomach is not attuned to horrendous amounts of chilli! I know you're going to argue that the thai-food dealer down-town makes excellent meals, spicy but not too spicy and with just that touch of chilli that enhance the other tastes. Well, as mentioned elsewhere Thai food here is nothing like Thai food in Thailand. I guess the principle might theoretically be the same in Thailand with the important footnote that their level of chilli imbibing is far out of a normal Caucasians scale resulting in the amount of chilli necessary in the food to 'enhance' (/annihilate) other tastes is far higher. I love it - once your stomach adjusts its acid level and your taste buds recalibrates (or grows out again after being burned to cinders in the first try) Thai food definitely has its upsides.
When you walk around in Bangkok there is hawker stalls everywhere selling fresh fruit. This is great news for those looking for alternatives to chilli-drenched meals - if you can sustain your existence on fruit of course, which most people cant for prolonged periods (such as e.g. a month, which was how long we stayed ;-). And it's actually very nice to always have fresh-cut fruit within reach to refresh you in the hot and humid weather.
Also displayed en masse is small side-walk restaurants. If there's room for a few tables and chairs and a 'kitchen' of sorts why not have a restaurant. They have a decent amount of dishes at an extremely affordable price and if you have gone through the effort of learning Thai you even know what you order. If you don't - like me - you simply point at something and hope for the best. And I must add that this method is shaky at best. Most of the time it doesn't really matter where you point, what you ask for (in the vain hope that even the most rudimentary English skills are present at the other side of the desk) or what the price labels indicates since you will inevitably get something different at a seemingly random price (sometimes also cheaper than expected).
Ok, says the smart reader, you were in a class with 50% Thai's, so you should have a chance to befriend some of them enough to help you order. True. And I did. We were on several occasions hanging out with them after classes and also going out for dinner. Sometimes a lot of us, sometimes just a few. At one such occasion I was having absolutely the best seafood experience of my life - I guess we were about 20 sitting at one of the better side-walk restaurants and the Thai's just ordered seafood galore: Several kinds of fish, whole crabs, crab claws, sea snails, clams, squids, cuttlefish, lobster, fish soup, shrimps etc. - very delicious! However, the chilli level calibration issue still remains. So when one of the Thai's tell me that this particular fish dish is sweet, actually almost sugared, my mouth still explodes in a fireball leaving the impression that it wasn't in fact a dish but rather a Molotov cocktail and left me feeling like a exceptionally poor fire-eater. While I don't see this as an especially nasty joke played on me it illustrates all too well the problems of getting local advise - the common Thai's definition of spicy was not even comparable to mine at the time. But given some time you'll adjust and Thai cuisine really grows on you - to this day I'm still a big fan of chilli :-)
Last thing on the menu today is Thai desserts. If at all possible stay well clear! At the classes we were treated with all kinds of Thai desserts, sweets and other afters so I believe I am well versed in that area. They can roughly be split into 2 categories: Fresh-fruit dipped in a sugar-salt-chilli mix and the ever popular lukewarm-coconut rice-starch combo. Need I say more...