The SR 84 location was bulldozed (quite a while ago) for 575 - after a lot of bluster about how it would never happen;
I understand they ended up someplace on Broward Blvd. prior to the final demise.
Yes I remember the Jingle bells stuff, Hokey pokey, greensleeves, etc. but not the other one you mentioned (john jacob jinglheimer schmidt);
Barker and the seed in general tried to remain pretty low profile in my day - the media was feared.
All of the licence plates, t-shirts, and any other promotional stuff went away during my first year or so;
Whenever there was any kind of story, they/we went into a high alert - all of the Jim Jones paralells (and denials thereof) would come out.
In house he was still worshipped and it was still under stood that he had mystical abilities bla bla bla