Saturday night was just great with a folk Bigband. Ich war so richtig kandidel, aber hoffentlich noch nicht überkandidelt. Some of the instruments looked really unique. Yes, and like Ernest I want to thank Susanne for the perfect organisation.

kandidel, norddt. (veralt.) fröhlich, heiter (in my five year old Duden)
kandidel, north German (obs.) merry

In my Brockhaus of 1935, they only have the spellings kanddel and kanditel but they have also the reflexive verb sich kandideln, sich betrinken (to get drunk).

I have found nothing yet about the etymology.

From a short web search it looks as if the word means "heiter" more in the sense of "angeheitert" that is merry in the sense of tipsy.

Wolfgang