Do we have Monday off?
Probably not. My course has Monday off though.

Get used to the fact that your classes and/or examinations may fall on other (quasi-)public holidays too (e.g., Melbourne Cup day, Queen's Birthday).
Does anyone find going to lectures a waste of time ? Going to a lecture then having to re-listen to the lecture is such a time killer. Especially with subjects like anatomy where there is so much content in the lecture I would have to re-listen to lectures to write all the important points the lecturers say.
I may skip most of my lectures but I don't think this would be a good habit ...
Sounds like you need to develop better note-taking skills. Invent your own set of symbols and shorthand for common words, phrases, etc. That will help you jot down points quicker and negate the need to re-listen to lectures.