Thailand is rightly named "the land of smiles." I've never met a more friendly and welcoming people anywhere else, and I've traveled a lot.
The country has a very long coastline and there is a significant contrast between the northern hill country with its colourful hill tribes and the south, though the entire country is rain forest where ever you travel.
There are a plenitude of rivers too, all over Thailand, including the Might Mekong which can be accessed up north in Chiang Khong and you can take a 2-day boat trip into Laos to Luan Prebang from there.
Having such a long coastline means that there is an amazing variety of seafood and fresh fruits found virtually all over Thailand, and Thai food tends to be very spicy so the first thing a "farang" or foreigner learns is to say 'mai pet!' when ordering food, which means "not too spicy please...!"
Bangkok in the center, to use as the hub, Chiang Mai, Chiang Rai, Pai, May Hon Song, and Chiang Khong are the northern towns and each unique and beautiful in their own way.
Pattaya, Phuket and the islands in the south are the place to go for sea going boat trips and island visits, though we were warned off Phuket because it is a Muslim area with some imported trouble-makers who stirred up violence and there were signs outside some Muslim owned hotels which read "No Jews or Israelis welcome," We didn't need that kind of experience, so we avoided going there... though Pattaya was pretty riotous, with crowds of tourists and locals thronging the promenades.
Travel is superbly easy all over the country, and particularly in towns.
Quick Tips:
Avoid planning a long stay in Bangkok. It is noisy, dirty, and tourists complain about being regularly ripped-off there.
Use Bangkok as the hub to first make a quick tour to see the Emerald Bhudda, the King's Palace, and Floating Markets on the river, and then quickly book your trip out of Bangkok, either heading north or south.
No one visits Thailand without having a Thai massage. They are wonderful and very cheap, between 300 to 500 baht an hour... that's between and hour. If like me you've never had a massage before, Thailand will make you a devout fan. They are soothing, relaxing, and above all given by Thai masseurs who have an uncanny sense of where the pain and ache spots are and hone in like they possessed a personal radar. After the first experimental try, I had one almost every day. Marion pays for a 1-hour massage in California, and in Chiang Mai they cost 300 baht an hour for either Thai Massage, Oil Massage, or reflexology. Not to be missed.Best Way To Get Around:
Try using the local airlines ("One, Two, Three, Go" for example), which get you very cheap return flights north and south.
Book hotels via the internet and get a 10 to 20% discount. In fact, hotels and car hire are always cheaper if booked from abroad. We booked our Chiang Mai stay at the Top North Hotel, and the 2-night stay in the New World Lodge in Bangkok via the Internet and got a 10% reduction and the bookings worked perfectly.
The ubiquitous "tuk-tuk" vespa 3-wheel taxi is extraordinarily cheap and one haggles for the price of the trip before boarding.
Red pick-up taxi trucks run like mini-buses, on a fixed route with a fixed price, costing something ludicrous like 10¢ for a trip across town.
Regular taxis can be hired for day trips too, for example, visiting elephant farms, orchid nurseries, and the like for per day. We were two couples, so that worked out at per head for an all-day trip to Maisai where we did a border crossing over to Burma to get a new visa. The visa cost , and the trip was each, and we treated our driver to lunch. It was the cheapest day trip I've ever done, I can tell you.
Inter-urban buses run between all the towns, and the locals use the regular routes. The tourists pre-book tickets at the bus stations on the V.I.P. buses, which are a little more expensive, but compared with London or New York prices, extremely cheap.
They are more comfortable that airline seats, and the "hostess" offers a bottle of cold water, a cold face towel, and a sweet roll as part of the service.
I wouldn't recommend the trains, even though they run through scenic routes, because they tend to be overcrowded and have to be booked well in advance.
This means two trips to the railway station.
Take a Thai cooking course. I did a 3-day course and it was wonderful, costing . The Sompet Cooking School, on the banks of the river running through Chiang Mai, had a wonderful chef/teacher and beautiful scenery.
One can also take a Thai massage course too, and that's not too expensive either.