Hi Tod. Thanks for considering our plugins and asking your questions.
Front-end submission is possible via our Community Events add-on. It works nicely with our PRO add-on if you’re wanting to add support for custom fields on the events submission form.
Our Community Tickets add-on was created specifically for you, the site owner, to receive fees for users posting events to your site. There are several ways to receive fees (e.g. flat amount, percentage of the tickets they sell, etc). It requires our Event Tickets Plus add-on, which enables integration with WooCommerce and other e-commerce plugins.
None of our plugins interact with WordPress user registration or profiles. However, Community Events (front-end form submission) does have an option to disable/enable the form being available to logged-in users. Membership plugins work just fine with it too, if you choose to go that route.
We have many users who use the Divi theme. There aren’t any conflicts with it that I’m aware of.
I hope this helps answer your questions.
Last but not least, we have a pretty great Refund Policy so you can buy one or many of our add-ons and thoroughly test them.
Let me know if you have any follow-up questions.