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I wanted to suggest that if wishlists are enabled, the messages that appear are improved.
If the user is not logged in the just see a short-lived error message saying “Error You need to login to add event to wishlist”. This is not very user friendly.
I suggest they are directed to the Register/Login page. Either via link in this message, or immediately, as part of the clicking Wishlist action.
In a similar way, if the user clicks wishlist when they are logged in, after clicking wishlist, a link to their profile/wishlists could be added to the success message.
Further improvement would be to email them when the chosen event is coming up – allow Administrator some control over this in the backend.