Hello, I just came across your post and just wanted to let you know that in February of this year I went to Laos with GVI to do the program you are looking at. It was AMAZING! You have got to do it! The people you meet are amazing, having new friends from around the world is pretty cool! The novices are so sweet and its so interesting learning about their life. Laos itself is the most incredible place I have ever been. Its like going back in time! There's no chain stores or a lot of cars, its so beautiful.
How long are you thinking of doing it for?
I am also in my gap year and was really nervous to go alone, but honestly, i'm so glad I did go alone and not with someone else, it makes you be that extra bit more social and make really good friends with people.
Thailand was also so much fun!
Hope it all works out well for you, good luck!