You can't automatically join a higher tier, but you can upgrade your membership as soon as you demonstrate during class the AIDA challenges of the tier you wish to join.
No problem. You are welcome to join drop-in classes if you are certified with FII, Molchanovs, SSI, NAUI or PADI.
You should bring:
You can purchase any freediving gear you need from the Fins and Foam Gear Shop.
Buoys and lanyards are provided. You are welcome to bring your own lanyard if you have one. For safety reasons, you must use the buoys provided.