We have receive our luggage tags, made as many restaurant reservations as were available, and have booked all of our shore excursions. I checked us in today and received our boarding passes (for the ship). We have also completed our VeriFly app and have received our digital vaccination certificates on the app. The only thing we haven't received is our airline ticket info. I know United has our reservations because I have been to their site and chosen our seats. I suppose they will e-mail our boarding passes to us. We did a Viking river cruise in 2019, using Viking air, but I don't remember how we got our airline tickets and boarding passes.