Hi Simon,
Thanks for the interest in the Community Events Plugin.
To answer your question, no the Community Events features do not come with Pro.
Each plugin is separate from the others and only require the base version of the Events Calendar to work.
If you would like Pro features you should purchase Pro.
If you would like the Community Events features you should purchase it and if you would like both sets of features you will want to purchase both.
Does that answer your question?