Is there an eCart Discount variable available?
Was almost there - In case anyone else needs to use this, the code below returned the value I was looking for:
<% if ([mycartname]_eCart_GetDiscounts() > 0) then %>
show something here
<% end if %>
My next question is: is there some way of pulling in the active discount name into the cart? So instead of just having the word "Discounts" in the Cart, can I use the Discount name, eg April Sale - 10% Discount?