Should I apply for a multiple-entry or single-entry tourist visa before my marriage in Thailand?

Easy option, get the Single Entry Tourist Visa, get the 60 days of stay on entry. Get married, visit the Immigration Office in Chang Mai, apply for the 30 day Extension of Stay to give you more then enough time to apply for the conversion to the Non Immigrant O Visa based on being married to a Thai National. You will get 90 days of stay with this conversion and after 60 days you can apply for the 1 year Extension of Stay based on marriage with a Thai National at the same immigration office.

You can only apply for the Multiple Entry Tourist Visa in a country where you have residency or at the nearest Thai Consulate in Perth Australia.

You'll need some type of visa to enter and stay in Thailand. Here's your options:

1. If you are from a western country (i.e. America, UK, Europe, etc) you have NOT used your two entries by land, I would simply cross back into Thailand by land. You'll get a 30 day visa exemption, extendable by another 30 days. It should give you enough time to legally get married (marriage is NOT the ceremony). I would save the money on getting a tourist visa.

2. Once you are legally married and you have the nice rose border marriage certificate, you have two options:

2a. Get a single entry "marriage" visa ("Non-O visa based on marriage") from Laos. This is good for 90 days. From there, get a one year extension of stay based on marriage. You will need to show income or savings of a certain amount. You will also need to file the 90 day reports every 90 days.

2b. Get a multiple entry "marriage" visa ("Non-O visa based on marriage") from Savannakhet, Laos, or HCMC. This visa is good for one year (or 15 months, if used correctly), HOWEVER you have to leave Thailand every 90 days. You do NOT need to show proof of finances from either Savannakhet or HCMC.

HOWEVER, not all nationalities qualify for a Non-O visa in Laos, OR can do the visa exempts. What country is your passport?