They had parking on the back of the building. I used to drive there very early in the morning, don't know about now tho (moved to Samut Prakan a few years back)
If your phone is locked, you can buy a cheap unlocked phone with a Thai SIM and use it as a Wi-Fi hot-spot. Otherwise, go to AIS counter at airport (at arrivals) and they will set up the SIM and data connection in less than 10 minutes. Other companies like True and DTac are also good
credo, ma non ne sono sicuro, che per il visto non O siano 60 senza prova finanziaria. Per estenderlo di un anno servono 800k baht in una banca Thai invece.