Spending Thanksgiving in Chatham

Hi,

I am thinking of coming to Chatham for Thanksgiving and the weekend after.
WIll someone please give me some information on activities that I may do with 3 teenagers.

Are there any holiday (x-mas) celebrations that weekend?
Museums, plays, shopping, movies?
Are there any holiday activities on either Martha's VIneyard or Nantucket? Do you need advance tickets for the ferry?
Any websites I can use?
I have not been able to find any information.

Thank you.

Susan
sdmcsue@nycap.rr.com