Apologies in advance if this has been asked many times before but I need advice re: 30 day waiver entry with a return ticket beyond that date. I'm trying to book a last minute trip to Thailand so have no time to get a Tourist visa for my intended 42 day stay. I plan to visit Cambodia for 1-2 weeks in that time and prior to the 30 days passing. Can I arrive at BKK with no visa and receive a 30 day waiver that I can extend or have reissued on re-entry from Cambodia or must I have proof of travel to Cambodia to show intention to leave in time? Both my relevant Thai Embassies (UK & Canadian) websites are suggesting that I must but ThaiVisaService kinda suggests otherwise - [members only]

Thank you for your patience!