its very simple and painless. I simply got my lease agreement translated...got the new passport back in 2 weeks. Many translation services on Trendy on soi13
youre not getting a 30day visa, youre after a 30dayexempt entry I summise. There is a maximum allowed of 2 per calendar year by land so if youve already had 2then you will need to go somewhere for a proper tourist visa. If not, then no problem