Thailand uses similar GSM mobile networks (GSM 900, GSM 1800 and GSM 1900) as Spain so you should be able to normally use your mobile phone.
If you don't want to buy SIM card in Thailand upon arrival, make sure to check the roaming charges with your telecom provider before your departure so there are no surprises when you return home.
To call Thailand from Spain, dial + or 00 (exit code for Spain), then 66 (the country code for Thailand), then the area code (without the initial 0) and the local number.
For local calls within Thailand, start with the area code (with the initial 0). In the case above area code is 2 .
The following vaccinations listed for this country are recommended for your protection and to prevent the spread of infectious diseases.
These apply only to select travelers or persons on work assignments.
In Thailand you drive on the left side. Most cars have manual transmission (stick).
Unless otherwise posted, the speed limits for cars and motorcycles are as follows: 120 km/h (74 mph) on motorways, 60 km/h (37 mph) in all built-up areas, 90 km/h (55 mph) on undivided highways and 90-120 km/h (55-74 mph) on expressways.
An International Driving Permit (IDP) is required alongside your original license. IDP can be issued by your local automobile association before you leave home.