I do hold Laos residence, I'm applying for Thai tourist visa, I'm traveling bus how can I do my return itinerary, I've ask at the bus station in vientiane they can't sell ticket from Bangkok, only to vientiane. Any idea?

I am in the process of planning my first trip to Asia, including Thailand and Malaysia. As I plan to spend some time in Thailand followed by Malaysia and then return to Thailand for some time, I will require a Thailand multiple entry Visa. I have heard contradictory reports about the application process for such a Visa. What I am wondering about is the section on the application form asking about my trip itinerary. It has been suggested by some that it is only necessary to list the place/hotel where I will first be staying. However, the application form asks for a complete itinerary. As I will be travelling for 90 days, this seems a bit much to ask. Also, I am asked to provide a Guarantor in my country of residence (I am Canadian, living in Spain).

Who can serve as a Guarantor (i.e, are there requirements for who can fulfil this role)? Any comments or suggestions would be greatly appreciated.