Providing the binoculars 'freely' increases the admissions price even for those who might have brought their own pair and didn't need a provided set. Also how w

Providing the binoculars 'freely' increases the admissions price even for those who might have brought their own pair and didn't need a provided set. Also how would visitors share the binoculars fairly between them, time-wise? Having them available for rent, essentially, solves these questions (albeit at a cost).