Currently you can see the total # of Fees sold in an event in NXT, but not get to the individual participant detail. It would very helpful to be able to see who registered for what when you have multiple fees associated with one event, instead of only being able to pull that information in DB view. For example, our event has 3 different activities you can register for, but there is no way to see which participants signed up for them in NXT, only how many were sold. I can see that John Smith is coming to our event, but not the activities he signed up for.
Take a look at Participant Option. It's a web view only version of a database view Participant Attribute. They also are available in column selection for web view lists.