It’s a big “Nope” to bring a couple of extra friends unannounced on the day of a service or experience. The host can turn them away if they’re not included in your experience reservation, or they haven’t been accounted for in your service reservation.
To avoid disappointment, include your friends in your plans early.
Already have your reservation for friends properly booked? Here how you invite guests to your experience reservation and how you invite guests to a service that you’ve booked.