Hi Eddie,
My family recently returned from a 8-night stay at
Disney's Caribbean Beach Resort and loved every minute of their time there.
As far as the Disney Dining Plan is concerned, everyone in your travel party ages 3 and over will receive a set amount of meals and snacks for each night of their package stay. So, in your case, if you were to opt for
Disney's Quick-Service Dining Plan, each person ages 3 and over would receive 2 Quick-Service meals & 2 Snacks per night of their package stay which would equate to a total of 32 Quick-Service meals and 32 Snacks per person to be used during your 16 night stay.
You can absolutely still purchase Disney's 14-Day
Ultimate Tickets even if you will be staying at the Walt Disney World Resort for 16 nights. Just bear in mind that these tickets will expire 14 days after first day of use.
Wishing you a magical holiday filled with memories which will last a lifetime!
Emma