I'd make it free for all adults. An open Townhall discussion about P4P, what management is planning and what they need from the fans.
Have Sha and McBride speak, have a few of our top donors speak about why they donate and why others should follow suit. Then open it up for any fans/alumni to ask questions and give suggestions on ways to improve engagement and donations.
Then announce the beginning of a matching campaign to raise funds. Tours and autographs for kids can be done at a separate date and time. Make this a night about the splendor of the facility and how SH survives in the new landscape.