What are the requirements for the 30-day visa exempt entry to Thailand?

I've been asked by many airlines for proof of onward travel. At least three times I was given a waiver to sign releasing them of liability if I am not allowed entry into the country.

Since this usually works out I don't buy an onward ticket and am prepared to buy the cheapest possible throw away ticket ($30?) while at the airport check in.

@Shannon *******

, you're far more likely to have a problem checking in with the airline bringing you here without proof of onward travel than you are with passport control once you land.

Many airlines require proof of onward travel if you are flying in without having bought a visa from a thai consulate before hand (30 day visa exempt entry). The reason is, IF for some reason you're denied entry on a 30 day visa exempt entry and the airline let you board with no proof of onward travel they have to lug you back to where you come from.

They'll give you an arrival departure card on the airlines before you land to fill out. That's it..

You're not getting ANY visa on arrival. :/ You're getting in on what's called a 30 day visa exempt entry.