For the tour yes, other than that it's a store/restaurant. The chocolate & wine sampling is awesome.
To purchase chocolates no, to tour the museum there is a charge, but with it.
Yes to go through the museum. The store and restaurant are free unless you buy something.
Yes. $18 for adults and children above 5 or 8
Very rich
No entry fee to enter the establishment but there is for the tour
Thanks! Your answer is awaiting moderation.