Planning a trip to Cambodia. Want to also visit BuriRam and Surin in Thailand. No matter how I plan, it seems like I need to enter either Thailand or Cambodia two times. With Visa on Arrival is there any issue with me entering Thailand, then going to Cambodia, then re-entering Thailand? Planning a three week trip and flying in/out of BKK. Other option is to fly in/out of Phnom Pehn. I think the tourist visas for both countries offer single entry. Any thoughts? Not interested in paying hundreds to get a business visa.