Hi Bryan. Event Tickets Plus does add the Attendee Meta functionality to Event Tickets (yes, even free RSVP tickets).
There’s not a “repeating fields” type of field to use for the Guest 1 <Add another>, Guest 2 <Add another>, Guest 3 <Add another>
If, however, you just want to have 4 static fields, for example: Phone#, Guest 1, Guest 2, Guest 3 — and they could leave Guest 2 and 3 (or even Guest 1) fields blank if they’re not bringing a guest, then that would be possible with ET+.
Last but not least, we have a pretty great refund policy so it’s safe to buy and try for a short while if you want.
Please let me know if you have any follow-up questions.