Royal Caribbean does not currently offer cruises from San Diego. Maybe they will return in the future.
The Radiance of the Seas was the Royal Caribbean ship sailing from San Diego. Features include Solarium adults-only retreat, signature rock-climbing wall, live entertainment, spa, game shows, Dancing Under the Stars, outdoor movie nights, kids programs, and casino. Dining options include Chef's Table, Cafe' Latte-tudes, Windjammer buffet, Samba Grill, Izumi, Dog House, Chops Grille, Giovanni's Table, Park Cafe, and the main dining room.