Perhaps in the main ticketing & baggage claim terminal during night hours. Doubt you will be able to stay in boarding terminal during the night. There are lots of things to do and see in town. In very few minutes you can be downtown loving San Diego!
Yes
Go down town and stay at a hotel. And sightsee.
Yup, is going to be a pain in the neck but the answer is yes
There's a lot to do in 14 hours..you are close to downtown so check out San Diego... if not sitting at airport is very fatiguing....
You can, but it will make for a long wait. You can easily sight see or rest somewhere else and then head back to the airport to check in.
Yes, you can!
Go enjoy your night
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