We left out of SF on the Ruby in May. We were in the first embarkation group so I can’t speak to getting on later, but the line moved fast, and it was well organized. The DaVinci dining room will be open for lunch. There is also the Horizon Court, International Cafe, Salty Dog Grill, and Slice Pizza. All of these are walk ups…and no extra charge. Enjoy your cruise. The Ruby staff is great!