The school district expects over 300 attendees at conferences at R2i2 on those days.
The library suggests you consider the parking problem if you plan to visit the library on those days.
My reaction? The library is a full-time, year-round lessee of the District. The District should not disrupt services of the library. The District should protect some parking for library patrons.
One way to do that is to arrange off-site parking for conference attendees at Sandhills Shopping Center and to provide shuttle buses to/from R2i2.