Manch is about 1 hour from the lake. Run right up I-93 to Tilton, Rt 106 I think to Laconia to Rt 11, to Rt 3 to the Wiers. Weirs Bch is one place to get on the Mt Washington. What the Wiers was in ancient times was a wood woven fishing method between the two main bodies of water. Pagus Bay and lake Winnie. A real weirs..
From the scenic train depot and real old depot a the Weirs you will see the ossipe mts on the north side iof the lake. These are what's left of a mt said to have been some 44,000 ft !!!!!!! It is an ancient volcano and IS a Ring DI-KE. ( I got nannied for a geolodgic term)
Last I knew at Caslte Spring Bottling plant, a open factory to see how sroing water is made and I think now also a brewery maybe, on the same land as Castle in the Cloulds is or was an airial photo of the ring ****. Topo maps can be had to show this as well. I am not sure how much interest childern would have for that though.
You can see this on line with any topo mapping site using 03886 as a zip code, and moving due south 6 miles. Back out for a larger over view and you will see a near to perfect circle.
The mountian Mt Washington not the ship, has the Cog Railway. They have a site too. I have never ridden the trains there, but in part of i am a snob hiker
This is on the west side of Mt W.. On the East side there is the Mt W Auto Road where you can drive your own car for a fee or take their vans and just sight see.
Be sure the weather is clear or a ride in clouds is no different than a ride in fog.
No matter what, if you go to the top of Mt W bring coats, and other warmer things! You will need them! Mt W is 1 mile high, and it is almost always cold up there compared to down below.
I am sure the auto road has a site too.
Check on Franconia for their Luppine Festival. I forget when that is, but it runs around 4 weeks. The roads are marked for that, and just doing that will get you out and about. I almost feel sorry for Chucky Cheese, even though I have no idea what that is.
In the mt's be sure to have the kids roll over some dead wood logs.. Things live under them kids like! There isn't anything living in the wild that can hurt you here. Well we have assorted wasps and bees, and the like, but nothing more posionous than that.
With bears and moose it is best to stay in a car. People do get out for pics, and usually that is safe enough, but with kids who can do strange things they should remain in a car.
You really should make it a point to drive the Kanc Rt 112 between Lincoln and Conway. Get gas... 32 miles with nothing.. Just one great view after another, and plenty of off road points to park safely.
If you can, don't plan to a room for a week in manch... what for????? Just about every northern town has all kinds of lodging. Big Hotels Big motels, quaint Inns and B&B's, some places still have 1930's like cabins even. I wouldn't worry about not finding rooms either. Last August 9th I hit a jeep on my motorcycle, that hit a moose. I was able to find a room in N Conway for the guys in the jeep easy. Their jeep was totaled, and first I had the state police bring them to where I live as my wife left her phone home, and then I had to get a bigger vehical than my bike to take these guys.
Don't crash we don't have buses and or many taxi's.
North Conway has tons of shopping. That isn't anything my wife, and i do really, but it's there.