T.O.
When they are really infants, then life shouldn't change. You can go almost anywhere you did before with an infant.
If you hadn't developed interests before now is a good time. If you both like cars, go to car shows. If you both like museums, start going. Zoos, gardens, aquariums, trails (with a baby backpack), boating anything like that is easy now.
Movies are hard. Other people don't appreciate babies crying during movies. And they almost always make some noise during a show, so I'd skip places you're supposed to be quiet.
Clubs are not an option, but get a sitter if you want to do that from time to time.
But develop your interests and if you don't know what they are start trying things out. There's lots of community classes, with cooking, dancing, sewing etc. that you can take for little money.
There's nothing wrong with doing things without the other spouse either.... he can go play ball with the guys, you can get together with the girls for Bunko or whatever. As long as you have some together time.
As the kids are older, you will have less time to worry about figuring out what to do because their world will become yours. If they're a girl scout, you will be too. If they play baseball, you will be the team mom or coach or something. You'll know more about baseball than you'll have ever dreamed.
That's why I say develop your interests now. So you'll always have a family interest that you can all fall back on together.