NO MARGARITAS UNTIL AFTER CLASS!!!
It was great fun for a lot of years. Then sad things began to happen. One student's wife developed dementia and they moved back east so he would have family to help him out. Another student had been fighting cancer for years and was finally overcome by it. Still another student, whose husband had been seriously ill for many years decided that she could no longer make the trip with him to the southwest for the winter. This sort of thing makes you very sad and takes away your creativity, so for a while I stopped teaching.
I felt very creative for all those years that I was teaching, and I have come to realize that teaching other people the skills you have learned makes you a better artist. It makes you think beyond what you learned years ago and makes you want to experiment and improve. This is what my students have given me--more knowledge, and more creativity, and a desire to be a better painter.
If you want to do something better, teach what you do know to someone else. It will make you think about what you don't know, and make you want to learn. Share you knowledge with others and you will get a delightful return on your investment. Plus, if you are really lucky, you can drink Margaritas in the afternoon with people you really like.