Years ago we used to plan date night, hire a sitter and go see a movie or out to dinner. I can remember being so tired with little kids, working full time and getting ready to go - both of us falling asleep at the movies.
Nowadays we're far more spontaneous. If we find ourselves without the kids, we'll say "Let's go get brunch!". We have a few little neat places nearby we like to frequent (without kids) - even just coffee overlooking this wonderful view we have nearby.
For me, it's about reconnecting. We're pretty simple in our tastes, so it could be a walk on a local trail without kids. Now that our kids are old enough to babysit, we are able to do this more. But it's more about taking advantage of when it works out than planning for it. I like being more spontaneous.
We did just go out with my family (adults only) this past week and that was great. I enjoy that also. We also go on a shopping trip (not my husband's thing at all but he will stock up if we do this) with another couple once a year. That's fun. Very relaxed and we all get along and there's no pressure. It's more about the food and company.
I would say I probably suggest it more, but I have more time (my husband goes flat out).