Fresh Cut Tulips come wrapped in plastic.  Before removing the wrap, cut your tulip under water and place in your bucket of water (again do not use softened water) then add flower food.  Allow to drink four hours.  Remove wrap and place bucket in cool location until ready to work.

If any of your tulips droop, use a pin to poke hole beneath flower head as shown in photo.  This allows the air to escape and water to move up the stem.  Cut once more and place in water. Some tulip stems are flimsy and you can use a small wooden pick inserted up the stem to hold into your arrangement. 

In this way, you also have more assurance that as your bouquet is delivered, the tulip stem will not fall over or out of the bouquet.