to enter Thailand, you do not need to go to any embassy to apply for a visa, if the visit is for tourist purposes and you are expected to stay for a maximum of 30 days .
Entry into the country therefore does not require a visa and is absolutely free.
This visa exemption allows you to stay in the country for one month (30 days), without resorting to any specific card and without having to go to the embassy. After 30 days, the stay can be extended by 7 days
For those wishing to stay in Thailand for 60 days, then the visa application is necessary and must be done at the Thai Embassy in Rome, in any other country where there is a Thai embassy or at the immigration office. The cost of this Visa is 1900 Baht which at the current exchange rate is € 44.
Generally with two working days you can get this visa lasting 60 days. "
The visa can be done at the Thai Embassy in Rome , Consulate in Milan , Turin , Genoa , Naples or simply by contacting your trusted travel agency. The cost is 30 euros , about 1000 baht in other countries bordering Thailand. Visas can only be obtained through Thai consulates, immigration requires the extension of a visa, which in the case of the Tourist visa is up to a maximum of 30 days.
If you are already in Thailand and want to extend your stay, you can leave and re-enter the country, you can go to Laos , Cambodia , Malaysia or Vietnam .
If you cross the border by land, the visa will last for 15 days, if you go by plane then another 30 days.
The residents of San Marino have however also need visa for a stay of 30 days or less and must have it before arrival in Thailand.
For those wishing to stay further ( overstay ) according to Thai law, a daily tax of 500 baht or € 12 must be paid, once exceeding 20,000 Baht (€ 500) without a visa the price to pay is ... arrest and deportation.
But even in this case; it is a risk and not really a legal practice, much less something to rely on, therefore to be avoided.
In Thailand the laws are very strict so do your math well and do not exceed the maximum allowed, also avoid staying in overstay too many times otherwise you request to become part of the black list marked by a red stamp on your passport that will not allow you to return in Thailand.