Hi, Christine.
Restricting view access to certain fields isn’t an available feature out of the box.
Also, the Attendee Information fields get displayed per ticket, so they’d have to complete the information for each ticket (e.g. 5 times for quantity of 5 tickets).
Custom could could probably accomplish what you’re wanting, but the internals of how things work don’t really allow for this sort of customizing (i.e. the code might need to be a bit “hacky” to accomplish what you’re wanting).
If you need some coding help, you may want to ask your own developer or reference our Customizations Documentation, which includes a link to Hire A Freelancer.
You could request this as a new feature (or maybe search to see if the idea was already posted by someone else) at our plugins’ UserVoice page.
This allows others who are interested in that feature to easily voice their support. We frequently review suggestions there to find out which ones are popular, then we implement as many of them as we can.
If you post it / find it, feel free to link to it from here in case anyone comes across this forum thread in the future.