Australia may be different. Just off a Constellation cruise, cruise ended Feb 3. As we had the non-classic alcohol package (purchased it before they changed everything) didn't have to pay for sodas and espresso-based coffees. As far as I can tell they charge for soda and espresso-based coffees for those pax without a package. Espresso based coffees were around $5 each and were made well.
Personally, I think the regular coffee on Celebrity is the worst at sea. For all the time I was onboard I only tasted the regular brewed coffee once just to be sure it was as bad as I remembered from a previous cruise.
I did not see 7-up anywhere.