Hey John,
The standard PayPal account should be fine. You may need to provide some more account verification to sell things, for example, but you won’t have to upgrade to Business Pro or anything like that at this time, with the basic features.
PayPal or any payments-related things are not handled by The Events Calendar or its WooCommerce Tickets add-on at all – they’re powered by WooCommerce itself, and The Events Calendar just “plugs in” to that process.
I mention this so that if you have further payments-related questions, you can reach out to WooCommerce support and get more accurate answers than what we can provide here.
But if you have any other questions, let us know!
Cheers,
George