The Mileaway in Milford.

Ice skating at strawberry bank. They served wobbly sodas at the concession last time I went. https://www.strawberybanke.org/skate/schedule.cfm

Also Moxie or the Kitchen for food. Might wanna check out Liars Bench or Portsmouth Brewery for some cool brewhouse vibes.

Came here to say this. The Seacoast definitely isn't southern NH. I'd say it ends around Rt 125 going east. I think southern NH ends at the Hooksett park and ride, before Concord. Southern NH is kinda just another name for the Merrimack valley imho.

Portsmouth is a great walking city as many have recommended. They have outdoor ice skating in the historic strawberry bank settlement, which is absolutely magical, and lots of good restaurants, like Moxie and Street, and Liars Bench is a cool brewery

As far as restaurants and eating you'll be pretty disappointed compared to Europe for the most part. If you might want to explore Manchester (biased cause it's my home), it's probably an easier drive from gunstock than Portsmouth. People tend to shit on Manchester, but it has some of the best restaurants in the state. Elm st and Hanover st have several great places and I'd recommend Industry East (doesn't accept reservations, but has the best food in town), Firefly, Ignite (Mahi mahi dish), the Crown, and the Foundry. Birch on Elm is also reopening soon. I would definitely recommend driving past Concord and heading to Manchester. Concord doesn't have as good a food scene imho.

Up near gunstock all I can really recommend first hand is the brewery Kettlehead.

Edit: I could make an argument for spending a night in Manchester rather than Portsmouth. The drive up 93 from is substantially easier imho.

I prefer Elliot to CMC just because they have access to more support imo. The Elliot is part of SolutionHealth which is loosely affiliated with Mass General Brigham iirc.

That said Boston has some of the best teaching hospitals in the world such as MGB, Beth Israel Lahey, and tufts. These health systems provide over 50% of care for Massachusetts and offer their own insurance plans through MassHealth, which may contribute to higher cost of care. Also, as specialty care becomes better further outside of city centers, it reduces the need for acute care in those areas, to a degree. Therefore, these health systems can justifiably funnel acute care patients into higher cost beds around Boston. I'm not saying that it's a bad model, but I can see why some people worry about it. And I'm certainly not a billing & insurance wizard, so if someone has more info please correct me. /Rant

If I had an acute life-threatening illness or trauma there's no doubt I'd want to go to Boston. No knock on Dartmouth, which is a level 1 trauma center and has a great reputation with the med school and Colby-sawyer nursing.