I Do Not Think That There Would Ever Be A Happy Days Reunion Without the late Mr C and Arnold AKA Pat Morita
the same thing with Laverne and Shirley with Edna And Frank just my opinion and there is no telling how AL is doing

I think your right. They could have a Happy Days reunion w/o Pat Morita. I loved Arnold on Happy Days but he was a minor character and he left the show for a while. You cant do one without Mr. C. He was so good on that show. You can do a reunion but it wouldnt be the same. I'll go on as saying that he was one of the great TV dads of all time.