Hi Bethany, Nice to hear from you again. I haven't heard about any hostels asking for proof of vaccination but there's no reason your hostel couldn't be the first. In San Francisco, bars and nightclubs themselves pushed for legislation for patrons to have proof of vaccination. I remember seeing a news report with a bar owner who said he felt the requirement actually helps their business because their patrons feel safer to drink with others who have been vaccinated. Let us know if you decided to give it a go and I'll feature your hostel on the next episode of Headlines in OurHostels.