Dessert question

In addition to wedding cake my hall offers a plated dessert. When we picked our menu FH and I picked an ice cream in a pastry shell dessert in addition to having an ice cream sundae bar that we added on. We picked the plated ice cream dessert because we weren't that into any of the other options. Last night when I went to make the final payment the BM suggested we change it to chocolate mousse (this wasn't on the menu when we picked) bc we were having the ice cream sundae bar. My question is should I change it even though I already made menus that say the other dessert?

Thanks ladies!