I've been solo a number of times on my birthday, I always take a trip somewhere for my birthday and since DH hates to travel it's usually solo. I'll be there the week before you this year, not solo but with my son since it's his college spring break. I love going on my birthday, get you a big ole birthday pin and sport that puppy all week. You'll get lots happy birthdays from cast members and even guests. I tend to take the time to go slow and just enjoy the place and not necessarily go ride crazy. You would be surprised what you miss in all the details when you are with people and don't just stop and look and listen. Spend a lot of time on the benches throughout the parks and sip an adult beverage if you wish and just watch. Resort hop, my favorite thing to do and just wander around the resorts. Have tea at the GF, it's expensive but a great experience.