Brendan,
I’m sorry to hear that you’re having problems with the CSV import. I will try to help you get this figured out.
I took a look at your csv file, and I discovered an “&” that hasn’t been escaped. It is in “Ladies Sip & Swing 2018.”
I changed the & to & and the csv then imported all the events correctly. So change the above to “Ladies Sip & Swing 2018”
Edit: I am unable to get this to show without it being resolved into the “&” symbol. I am attaching a pic:

I do see some characters that aren’t resolving due to non UTF-8 format, but that isn’t preventing it from importing.
Give that a try and let me know if it works for you.
Thanks,
Sky