Expressions can also use variables. Variables have a Variant data type and the expression evaluator converts the data type of a variable from a Variant subtype to an Integration Services data type before it evaluates the expression. Variables can use only a subset of the Integration Services data types.
The total COST of each cocktail using 2oz whiskey per drink and using the higher estimate of $90 to buy all ingredients, the startup cost comes out to about $7.5/cocktail. After that first bottle of whiskey is gone, you will surely have PLENTY of the other ingredients left.
1 For example, if you have a party of 200 guests, 2 bartenders are going to be needed. 2  If this party is going to be around 4 hours, the cost will more than likely be $200 to $350. 3  The largest extra cost of hiring a bartender is the alcohol used to make the drinks.