1 bottle of champagne didn't cost me anything (besides champagne inventory) but 2nd bottle cost me 1 cc (no champagne shown in gift list (with 1st dc it showed as 1) besides buyable with cc) and I have near 500 of champagne. Sent bug report and I can hardly wait what response I get (if any).
if there are 2 types of champagne (free (gang fuck off) and cc) then I can happily remove div chicks and probably perfect girls too since game doesn't give that much ccs to buy champagne when needed (to replace all non-divines (actresses and workers) with divines) since its basically spend 2+ bottles get 1 new girl (unless getting foreplay to 2k+ (incl. champagne) gives 100% satisfaction on dates with divines).
ïf restriction that 1 free champagne to be used per day then divines etc can be removed since replacing whole roster would take couple months and getting them to max sa would take weeks (I got 2 divines with sa basically 0 (1/100 and other 1/99) so getting them to max would take long time).