Planning for a Spain trip this fall, first time for us in over 20 years. I have a few restaurant questions, hoping to get some opinions...

1. I'm intrigued by Enigma (I guess that's the point) in Barcelona. Anyone been there, and what was your experience? In particular, I'm seeing that the typical dining time is between 3.5-5 hours, which might normally be fine, but as BCN is our arrival, I'm a little worried about jet lag.
2. Is Engima even possible to book? It would have to be on the weekend for us, as we leave BCN on Monday.
3. In San Sebastian, we're looking to do a dinner and a lunch. Want to try Mirador de Ulia for the views...better views for lunch or dinner?
4. Has anyone tried Amelia or Kokotxa? Would love to see any thoughts on those as they're within walking distance of our apartment.
5. Are the lunch and dinner menus the same? I'm not sure we want or need a 10 course meal for lunch. Any starred restaurants offering an abbreviated lunch menu?

Thanks!