Below is some useful travel facts for your trip to Laos.

Safety: Laos is a safe country. Pick pocketing and bag snatching exist, but not common.
Departure Tax: International 10USD
Government: LPDR-Laos People Democratic Republic
Language: Lao
Electricity: 220V (50 Hz) ; 2-round pin plugs are common.
Weights and Measures: Metric system
Time: GMT + 7
Film and Processing, Memory Card, Camera Battery: There's a limited range of accessories for digital cameras, though you can burn images to CDs at camera shops in Vientiane and Luang Prabang.
Emergency:  195 for ambulance and 191 for the police.