We stayed at Vero last September and truly enjoyed it. Do you enjoy biking? One of our favorite things was our early morning bike ride along the Jungle Trail. It is not part of the resort, but you can ride from the resort to the trail. Really nice.
Campfire was fun for our kids, but not geared toward adults. They did a lot of silly campfire songs. All the kids seemed to love it. Several adults-only groups left early.
Check out the schedule as soon as you get there. They have some really cool events, such as a turtle conservation presentation and an early morning walk on the beach to view the turtle tracks.
If you have kids, sign them early for the Unbirthday Party. There was no charge for this event (I think it was ages 4-12? Something like that...) and you can drop off the kids for an hour or so and enjoy some adult time. The kids played games and decorated cupcakes.
I kept trying to book things before arrival but I was told there was no need. Just check the schedule when you get there and book the activities you to want to book asap (some are show up - some require reservations).
Will you be there on a weekend? I think they have a character breakfast on the weekend. This you might have to book a little early.