There are tons of great Currys

• Penang Curry is one of my favorites if you like spicy... if not ask for mild
• Green and red curries are always popular
• Red curry crab is absolutely amazing, and there are roadside stalls with fresh crabs

Papaya salad is popular, but if you feel like a bit of meat and still want low carbs and full of flavor... I love Thai beef salad.

Being in Bankok there will be tons of low carb options and with all the food on the streets I think you will struggle to stay low carb the entire time, the food is very fragrant and tempting... If you have never seen real durian, you will smell someone selling it before you see them sometimes. It's banned in most hotels here in Siem Reap. This year A University was exacuated in Australia... turned out to be durian, but people thought it was a gas leak 😂

and while tuktuks are a great novelty...taxis are safer(bag snatchings), have aircon and nowadays are cheaper also. As @o07 said Grab is a great app for taxis and tuktuks.

You can pick up a tourist sim from the airport or 7Eleven and it will give you free some free data for GPS and apps. Top-ups are dirt cheap also.

If you like fish though... If you cannot see the fish before they cook it (most places you will though). Make sure you ask what kind of fish, river fish is almost always catfish which can be off-putting when your not expecting it.

Thailand is amazing. Bangkok is great but if you get a chance to explore more of Thailand. Do it, the majority of the country is not like Bangkok!