Help me plan my 4 hours ashore in Naha. Want to buy cool Japanese stuff while I’m there. Very limited time

Hi I’m a merchant mariner, I’ll be arriving in Naha Japan in a few days and I’m trying to plan my short visit. I’ve never been off the ship there. We will be docked at Naha International Container Terminal.

I’d like to bring home cool traditional Japanese items or Japanese crafted items for my family for their late Christmas gifts. I have a spending range of about $300-$400 total for my parents gifts. And want to get something small and fun for my 2+5yo nieces. I have very limited time. Ideally I’d like to get shopping in and grab a nice lunch with beer while I’m there.

Any Recommendations on where to go and even gift ideas if you have any please. Specific shops would be helpful too as I won’t have too much time for wandering.

Thank you.