Can an Irish citizen get a multi-entry visa for three months in Thailand while visiting Laos and Vietnam?

tourist visa gives you 60 days then extend, beware their website is a shit show at the minute when you try and pay, it took me nearly 30 times with different cards, browsers devices, and took over 7 days to get it, so try and do early fella

A multiple entry visa for Thailand is expensive. I think around £150. You can get a single entry visa for £30 that would give you 60 days, or depending on your travel plans have no visa and get a visa exempt stamp for 30 days for free.

If you're only going to Thailand for 3 months and plan on traveling, then there's no benefit or reason for you to get any visa at all, let alone an expensive multiple entry visa.

With an Irish passport you'll receive a 30 day stamp each time you enter Thailand. You can also apply for a 30 day extension on each one of these entries.

So enter Thailand, go visit Laos within 30 days and you never even need to go to immigration, or if you visit Laos from 30-60 days then you just need to apply for the extension before you leave.

Same thing when you return from visiting Laos, you'll get a 30 day stamp and then if you go to Vietnam before 30 days you don't need to do anything, or if you go to Vietnam from 30-60 days you just need to go to immigration and apply for the 30 day extension.