If you have a single-entry tourist visa, does that negate doing the visa run across a border? Also, with any tourist visa, do you have to have a return flight date?
Ok, thanks to you all for the info. I was trying to avoid the visa runs, but it seems to be the best option. I was hoping to go to Hanoi, but I would need yet another visa to go to Vietnam, so maybe that's not an option. Cambodia, Laos, Myanmar and KL are all ok though?