Drupal views, show 'add to cart' button instead of ''Register now'
Yes, you can rewrite the register now link  to or add custom text field with rewrite link as 

https://domain.org/civicrm/event/add_to_cart?reset=1&amp;id=[event_id] 


to remove from cart

https://domain.org/civicrm/event/remove_from_cart?reset=1&amp;id=[event_id] 


Thanks

Pradeep