Hello,
Thanks for reaching out!
Really the only difference between the two is whether or not you want to require users to login to your site to be able to register for tickets. If you do enable this setting and a user tries to register without being logged in, then they will be prompted to login and will not be able to complete their registration until they are logged in.
There is an additional feature that comes with requiring users to login to register – they will be able to come back later and edit their details. You can see some screenshots and get some additional details on how this works here.
If you don’t enable it, then anyone that can view your site will be able to register for tickets. Some users don’t want just anyone to be able to come to their site and register for events, which is why we offer the option 🙂
Does that answer your question? Please let me know if there is anything else that I can clarify!
Thanks,
Jennifer