We have done it quite a few times, some with all four of us plus my in laws, some just the four of us and three with just two of us (me and DD or DS). It is a great way to see the fireworks in comfort. Much of the experience depends on your captain. We have had really great ones that provide new insights, information and commentary at appropriate times and some that, to be frank, talked a bit too much and were intrusive. The snacks provided are adequate and the boats are nice. Of course, the more people you have the more value you get out if it. I admit it is a bit crazy to do it with just two people but my DD and I have done a few mother/daughter trips and we like the cruise enough to book it for just us.