The chosen route is quite good. You can arrange three nights in Bangkok, two nights in Pattaya and three nights in Phuket, which makes it an eight-night, nine-day trip. Chiang Mai and Chiang Rai are two neighboring provinces, about 181 to 191 kilometers away, and it takes about two and a half hours to drive. They are both mountain roads. See how much you like these places. If you feel better, stay one more day. If you feel better, you will stay less, but you'd better check it online.

The air ticket should fly to Bangkok. (If you are in Chiang Mai, you can go to Chiang Mai first.) The round-trip ticket from Shanghai to Bangkok is about 3111RMB, and it is more expensive from Beijing to Bangkok, usually about 3,511 RMB. I just checked it for you online, too. You can also take AirAsia, which is cheaper, but inconvenient, because AirAsia's flights are very late at night, and it's a bit far from Beijing to Shenzhen. Bangkok is 211RMB per night, while Phuket is more expensive. Others said: two nights in Bangkok, two nights in Pattaya, three nights in Bangkok and then flying back to Phuket. If you go to Thailand for the first time, these three places in Pattaya, Bangkok are all worth playing and fun.

travel expenses are relatively cheap. I don't know what level you want to play. Outside Bangkok, the daily budget is 311-511 b (including three meals a day, hotel accommodation, drinks and local transportation), and it will be very comfortable to budget 611-1111 b per day. In Bangkok, the cost is a little higher, and there are various grades. The standard double room with toilet, hot water and TV is

1111B, and the room rate for hotels with better facilities, such as swimming pool, carpet, gym and room service, is 1511B -2111B b. Of course, you can spend more on luxury hotels, and everything is available.

the rest depends on what you want to buy. I went in a group for 7 days, and the tour fee plus other tips was 3,111 yuan. Then I bought my own things, and I spent 11,111 yuan, mainly buying things from duty-free shops. If you estimate more than this yourself, and your time is twice as long as mine.

Finally, I suggest that if you have the chance, you must eat the corn there. It is super delicious and sweet, and you can mark the price. Ha, I bought it in RMB 2.5 yuan. Before you go abroad, you changed the Thai baht. It is cheap in China. You should greet the bank first, and then you can get it the next day. Then you must spend the money below 111 baht in Thailand, and you can't change the change below 111 baht when you return home.

I hope you have a good time.