Thai Embassy In Laos Holidays Next Week?

I know I'm just being paranoid, but I've heard the stories of people being stuck while going for a visa change in Laos.

I plan to go next Wednesday (the 27th), flying to Udon Thani and then taking the bus to Vientiane. I'm changing my Non-Immigrant ED back into a Non-Immigrant B for employment purposes. I've heard that they do next day service there, but I've booked an extra day just to be safe. As long as I can get to the embassy before noon on the 27th, I figure that everything will work out.

I think that I'll get my Laos visa beforehand to avoid any visa-on-arrival issues, but should I also get a re-entry permit on my Non-Im ED in case there is a problem? I assume that it isn't needed as I have all the paperwork I need, in Thai. I read the announcement here: http://www.consular.go.th/ about things that can affect express service, but I don't think any of them apply to me.

Is there anything I'm forgetting?