Had 19 walk-ins on Saturday and only 4 were my regulars

Saturday was nuts at my shop here in Boise. I did 19 cuts in 10 hours, which is way more than my normal 12 or 13, and only 4 of them were guys I see every month. The rest were walk-ins, mostly dudes who said they got tired of waiting at the chain down the street. My clippers actually got hot around cut 11 so I had to swap to my backup pair mid-fade, that has never happened before. One guy tipped me $20 on a $28 cut and said it was the best lineup he ever got, which honestly made the whole day worth it. By the end my shoulder was toast and I skipped dinner. Do you all cap your walk-ins at a certain number or just keep going until the doors close?