Visitor Count - Dormitory

We received our preliminary design review comments back and were asked to include a daily average visitors number. Our average users value is 3, peak users value is 27, and the FTE value is 3. There are 228 residents total in the dormitory. We do not expect very many outside visitors other than the occasional other student and/or student family members as the building is primarily lodging. Without a previous precedent to judge by and a currently incomplete project, what is the best way to calculate a daily visitors number? None of the categories listed in Appendix 1 seem appropriate.