I've been in Savanakhet a few days now, and a couple more to go.
So far these a the things noticeably different to Thailand.
1. The Lao people are more polite.
2. I have yet to come across an arrogant entitled khon Lao.
3. They all appear to respect the road rules diligently, despite the fact that I have yet to see a policeman.
4. Lao are less greedy and money-grubbing.
5. They are not into "curries" (gaeng whatever). Lots of different yum dishes, and BBQ meat.
6. Not into plain rice, but it's around.
7. They have no idea of their own modern history; They are ignorant of the notions of French colonisation and US bombs. The Communist National Assembly makes sure of that, I suppose.
8. Lots of goats here.
9.Lots of a breed of small cattle.
10. The beef is more tender than in Thailand. Significantly so. Still not Aussie prime, but beats Thai beef hands down.