Yep, just go and have a good time. I put "no presents, please" on my DD13's birthday party invitations. It's a rough year for everyone and she really doesn't need anything. I asked her if she would rather her friends come and hang out, or only have a few friends come and bring gifts? She chose her friends over gifts. If you feel the need to bring something, bring your camera, take pictures and share them with your friend after the party. That's the best gift of all -- memories!