I think Heaven will be much better than this. You'll be reunited with any and all missing body parts the moment you get there without having to go to any "reunion center". The only way to get to Heaven is to accept Jesus Christ as your Lord and Savior.
Most people think of reunion as that with other friends or family members. When we get to Heaven, we will first be made whole, So, the the reunion we will first experience is with out body parts that we lost throughout life.