I'm in Thailand on my second 60 day tourist visa and it's time for my first time ever doing an extension. I read the instructions sheet. I went to the website for immigration to make an appointment but can't. So .. I assume that for these 30.day extensions, you show up at IT laksi. ( Wherever that is but I can find out) with your preprinted passport copy, all the rest of the required paperwork and hang out until it's your turn?

Thanks so much