My wedding dinner experience...
Red wine is classy but there's a problem there's different country/type/breed etc... If you don't buy a decent bottle, it will taste like horse piss

. At the end of the day, you be left with boxes of wine to finish up (won't be a problem, if you love red wine A LOT). Also, you will need to store it proper.
Champagne is classy as well but expensive. they come in 750ml bottles. for Bubblies, people just take it as though it is sparkling fruit juice. The effect itself we come very much later. What happen is, people will keep drink the champagne and they do not know the after effect of it. You may run the risk of running out of alcohol before even the first dish is served.
hard liquor, rough on the edges but still it hit the right notes with most people. There's two variants you can have...
(a) Cognac (XO, Martel, Otard, Remy, Henessy etc...)
(b) Whisky (Johnny Walker, McCallen, Glenfiddich, chivas etc...)
typically a season drinker will not attempt to down such drinks because he knows he won't make it to the second dish if he does so. water/ice is added to dilute the effect. try a mix and match combo...
During the start of the function (reception phase), you can serve high end branded and aged alcohol (18 years +). Have 3-6 bottles, tell the bar tender once those are finished switch it with the black labels or the 12 year old whisky.
rule of thumb, start with the expensive and thereafter finish with the cheap ones. You will never go wrong.
P/S: before I forget. Other than the host tables (or some special guest), don't allow guest to pour themselves! It should either be served by waiter or bar tender.
This post has been edited by aurora97: Nov 13 2015, 04:43 PM