Thanks for all these tips, I did read them and kept them in mind, I just couldn't reply because you know, Thailand :P
They didn't ask for a return ticket (weirdly) but everything else they did, it was a real hazzle.
We took the metro, no taxis for this poor nomad :P
Thanks so much for this comment, it was really useful man and again, sorry for replying so late but I'm just getting some time now to reply to everything :D