Hi Fabian. Thanks for contacting us.
Event Tickets Plus is our paid add-on plugin that upgrades the functionality of our free Event Tickets plugin.
Event Tickets Plus enables you to sell tickets via one of our supported eCommerce platforms. The free plugin only enables free RSVP-type tickets.
Our plugin uses your eCommerce plugin of choice, but your eCommerce plugin isn’t displayed for shopping pages. Please reference our Making Tickets KB article (screenshots are from an install using WooCommerce) for an idea how to create tickets for an event.
Site visitors would purchase tickets from each event’s single page/view (e.g. example.com/events/rogers-day-at-the-zoo/) — if there is an RSVP to submit / ticket to purchase.
As far as a demo goes, you can use our free The Events Calendar and our free Event Tickets plugins to see how RSVP tickets work, which is very similar to Event Tickets Plus (except there’s an added step of completing the eCommerce plugin’s checkout page). Also, there’s a video demo on the ET+ sales page.
And, yes, you can have multiple tickets for an event like you described.
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.
I hope this info helps.
Let me know if you have any follow-up questions.