Determine the number of people
It is of utmost importance that you should keep track of the number of people you have invited over the party. For this, if your budget is high then of course you would not mind strange people coming to the party, but if your budget is limited then you must tell your friends to keep the invitations in close circle. Remember that failure to do so would end up in having a large audience and your party might be spoiled. Therefore, you must have a sound idea about the amount of people who are going to attend your party.
Analyse the class of people
Of course you would be inviting people of the same or low social class as yours. There is a little chance that people from upper class would be invited to your party. Note that there is no problem with having multiple social classes at the party but you have to take care of the taste of the majority as you do not want to have a bad evening.
Go to a club
After you have analysed the social class and number of people, you must go to your nearest club to choose from a variety of drinks. For the party, you must not rely on a single drink and choose a couple of them. Make sure that you have covered a good variety and the drinks are not poor in taste. You must look for drinks that are in high demand. You can easily obtain this information from the bar owner. After you have gained sufficient information, you must confirm a deal with him to have the ample supply of these drinks. You must not forget to arrange for some juices as they are also in great demand.