Lifestyle Cash bars question

[Smurfysmiles]

To keep costs down we are thinking of offering a free drink and then having a cash bar or else my dad was thinking of using drink tickets and then having guests pay for their drinks...is this too tacky or is it a happy medium between overpaying and being courteous?

 

[Smurfysmiles]

crap i put this topic in the wrong spot, just ignore this lol