ical - can party size (adults/children) be included?

I'm using an Ical link through google calendar and wish to include (for the cleaning person) the party size but not party name/email/phone. I'm not seeing an obvious choice in the ical link settings for this, is my only option creating custom fields or adding manual notes? Both are extra steps I'd like to avoid if possible.

To do this on the iCal, enable add a custom link with the "Show a full description of the booking on each event" option enabled. That'll show the guest count but not the contact info.

Another option is to give them portal access: https://www.ownerrez.com/support/articles/portal-access