Both my husband and I are involved in a singing group, so we'd at least be out 1x/wk for rehearsal. I love to do crafting and am looking forward to being able to do that when I retire, so might get involved in some craft/art shows. We've also taken a few hikes and done some photography, so might try to join a meetup group.
Our pup gets us up and out, although I'm sure Noelle (a german shepherd) won't be the dog that sees us through retirement. She'll be 12yrs old in July, and we figure I have about another 7-8 yrs to go to retire, so most likely we'll have another dog carry us through our retirement. Noelle's also getting a bit big for me to handle (80lbs - has pulled me down 2x chasing a critter on our nighttime walks - broken/dislocated shoulder and torn rotator cuff one time, cracked ribs another).
I can see though that it will be something that I have to work at and keep after myself to do. Hubby has taken to playing games on his phone and has gotten back into bike riding. We both play Ingress and Pokemon Go, but he will take a 17-20 mile bike ride into and all around town on Saturdays. I, on the other hand, am terrified to ride my bike on the streets with traffic, and that would only be if I could stay upright on it anyhow. Been looking into a recumbant bike, but their low profile could be a visibility issue.