Rabbi Avrohom Lipszyc of Bal Harbor says

Now here is an interesting law. One may never kvetch over having to do a mitzvah. However, one may kvetch over Passover cleaning. Why? Because the cleaning isn't the mitzvah. Not having chometz in your possession on Passover is the mitzvah. Therefore, one may not kvetch about not being able to have chometz on Passover, but one may kvetch about Passover cleaning.

more
http://jewishnetwork.blogspot.com/2010/03/kvetching-on-passover.html

Therefore, we may never kvetch about the dancing, but we may kvetch about the refreshments.

Monday is the fast of the first born. If you go to Shacharit, you do not need to fast.

By Andrew Weitzen, DanceCalendar.info, Bronze Inc. (c) 2010.

Andrew Weitzen is the author of Partnership Dancing™, How to Communicate Every Step in Every Social Dance Unambiguously.