I went to Buriram Immigration last week to do my 90 day report. Used my wheelchair at immigration as I am having a problem with my sciatic nerve. Was there about 10 minutes and the lady IMO asked for my passport. Processed very quick. She then asked one of the other officers to stand by me and she took a photo of us both holding my passport. Then told me next time not come but give my passport to a friend to take to Buriram Immigration for me. Big smiles from them and very friendly.
At the bottom of the steps at immigration a man came and carried my wheelchair up the steps. Carried it down again when I came out.