Greetings Daniela!
I am incredibly excited to know you'll be visiting the
Disneyland Resort for the very first time, especially because you'll be celebrating your birthday...Amazing!
I have plenty of recommendations to add extra Pixie Dust to your special day!
Since you asked about Tinker Bell, I will start by sharing that
Pixie Hollow is an enchanted forest hideaway across the Walt Disney statue at the end of Main Street, U.S.A. There, you will meet some pretty awesome fairies and possibly even Tinker Bell herself!
When you arrive at Disneyland, make sure you stop by City Hall and get a schedule of the day's character meet and greets. You can also download the Disneyland Mobile Phone App to find out if Tinker Bell will be available so you can plan on meeting her! While you're there, make sure you get a Birthday button. This will make it known to the world that it's your birthday and you're there to enjoy a Magical day!
Now, in terms of making your birthday trip even better-- buy the Mickey Ears! I would even get them engraved with the words: "Birthday Girl!" You can get Mickey Ears at the Mad Hatter shop on Main Street, U.S.A. (across from City Hall).
Also, head to Toontown to visit Mickey's House and meet Mickey for a special birthday hug and plenty of pictures to commemorate this celebratory occasion! The sooner you go, the better since it's a popular place to take pictures with the "boss".
Also, try to make a reservation at the Plaza Inn for lunch. Minnie Mouse and some of her friends will stop and say hi while you're dining. Plus, the Plaza Inn usually has a fantastic dessert variety, including cake for you to make it birthday official!
I hope this helps.
Thanks for visiting the Disney Parks Moms Panel.
Have a Magical Birthday,
-Anabel M.