Finally at the border, we had rice and chicken in Mae Sai, a border town, before taking a 15-minute songtow (two-bench covered, open small truck-taxi) ride to Burmese Immigration.
After a 500 baht fee each ($15) and forfeiting our Passports into their keeping during our duration there, we crossed a bridge over a river and entered Burma. Immediately there is a large tourist market/bizarre, with mostly imported goods from China, but also local items like fabrics and fruits.
We had about two hours to look around, before getting in line to fill-out immigration forms to
re-enter Thailand, retrieve our Passports, hire a songtow, treck back to the bus station and not get left at the northern border.

We always find that people are the same the world over, in that a smile, a nod, a kind word in their language is 99% of the time warmly received.
And we'd hoped to buy gigantic Chinese avocados, but we found they weren't in season. Ohhh the sadness. Have to get home-grown :)