Interesting post. Just to clarifiy a few points:
1) age is not a major factor, clearly there won't be 200 people 40+ years old or 200 people 23- years old so it will depend on the pool as always. I would say 25-32 is the general norm. I believe there are not too many students under 25 at Tuck but a lot of them is also 25-26

Internationals are older in general.
2) I dsagree with the comment made about the fact that nobody under 25 wants to live in Hanover. I think that we are talking about a MBA degree not some field trip. Location should not come up as a number 1 choice, not enven in your top 5 I believe. It's only 2 years but the impact is measured far beyond. I do recognize though Hanover is not NY though and I can understand why ultimately someone would choose another top 10 school but not if someone join a second tier school just for the weather/city entertainment/activities
3) 99.9% is about the fit at Tuck. Get to know the people. Ask basic questions. Show interest. Know some prof and some interesting classes but do not spend too much time on the latest publications, rankings of professors or stuff like these. Tuck is more focused on knowing if you will fit in rather than Tuck fit in your life.
4) Finally Tuck is like any school, some things are good and some aren't, just choose the school you think will be the best for you. I've just graduated from Tuck but I had the choice and I know why I made this choice, it should be the same for you. Make up your own mind.