You do have a couple of options for a drink in the domestic terminal, mostly restricted to lounges but smoking is not possible. Again, it depends on the time you arrive, assuming it is daytime, as most outlets are closed at night. You may consider stepping out of the airport to the nearest hotel and spend sometime there. But, be informed, when you leave the airport terminal, you need to reenter as a new guest, with all the formalities. The security would also not permit you to go out, once you have checked in.