I don't like adding new posts when there is a wealth of information here on CH but my request is rather particular and critical so please bear with me.
My step-father has a condition that compromises his immune system severely. He gets sick very easily, even in the open air. For this reason, I rarely (once or twice a year) see my parents, even for the holidays (flu season) and I almost never get to dine out with them (maybe 6 years ago.)
They are coming down to Tyngsboro for a few hours on Saturday and are cautiously willing to try dinner out at a restaurant. It must be clean and unlikely to see kids. I understand child-free is impossible to guarantee.
It should be within ~30 minutes of Tyngsboro. It can be absolutely any cuisine. It can be any pricepoint. If possible, casual attire or no dress code would be lovely, but I suspect that this is unlikely given the nature of my request. Small, private rooms that are sometimes found in Japanese restaurants would be great. Outdoor dining could work too but even still, no kids please!
If this request is a total pipe dream, I would also appreciate suggestions for well-executed takeout and a suggestion of an outdoor park that would make a good sunset picnic for 3-4 people.
I'd love to have a treat with my parents, thanks for your help!