There are lot of things to do inside an airport during layout
Try the best local cuisines along with international cuisines
Get a spa done
There are free foot massagers in many parts of the airport where you can relax your best. Airports are ideal places to walk from one end to another end
Do window shopping and shop for books. Enjoy the lounges
There is a shop called green market where you could shop juices are great here
Shop at gateway 2 which is a holistic mall.