I am 66 and retired almost 3 years now. I am out almost everyday.
Gym
Walking groups
Lunch/coffee with friends
U3A meetings and groups
Cinema
Theatre
Gigs
Holidays
Camping weekends
That is not including housework and gardening, which is fitted in somehow.
The list goes on 
So you can tell your Niece, no we cannot carry on doing what we have been doing....sadly
Supplements/Lotions for saggy arms and Neck?
After 10 years of estrangement I was invited into my son's house.
I've been using face time to keep in contact with friends and family, and going for a walk along the river most evenings. Thank god for Whats App, that's what I say!