Do not forget to support your local airline Thai air by flying to Europe this summer. Thai air have a few seats left for 15 000 THB to Oslo in Norway.
So you can go to Oslo and back to Bangkok for two people for 43 000 THB with tax and everything.
This is the less then you pay for a ticket for one person and you will be flying the new airplane.
I checked with all the Embassies and most of them can issue a visa for EU in a few days. The first 15 000 THB flight is on 5 July for now so you better hurry up.