If you think that you can't afford to take trips alone at least once a year, you should know that part of the fun is the dreaming, planning, and saving together in order to achieve even just one night away. Right now, my husband and I have already made our hotel reservations for our destination, but we are having fun researching places to visit and restaurants we would like to try. These are something like mini-dates for us.
As you create memories together on your trip, taking pictures helps in the time between vacations. You can look back during busier seasons of your lives and remember the fun you had together.
While teaching about this in a marriage revival we had with our church a while back, one of the ladies with an empty nest said, "Why do we need to take a trip together when we see each other alone all the time?" to which I responded - There's something extra special about going away so that the ordinary tasks of being at home will not hinder you from focusing on one another. If you don't yet have children or if your children are grown and gone, still remember that you won't have to clean house while you're away from home or even answer phone calls if you choose not to turn on your cell phone. You will be able to completely focus on one another and your marriage!
Give it a try, y'all! See what wonders it does for you!