1 pound frozen fruit is about 2 1/4 cups.

A basic smoothie recipe is
1 cup frozen fruit
1/2 cup juice, milk, lemonade, etc, liquid
1/2 cup yogurt, sherbet, ice cream, or ice cubes

The only thing is, this is a LOT of blender work and time- even at 2 minutes per smoothie, which is minimal, that is 17 HOURS of blending. Do you really have enough blenders and volunteers?

So here are two other very good and MUCH simpler to serve ideas; fruity slushy punch and aqua fresca, a delicous traditional drink that is chilly and thick and can also be made ahead.

FROZEN SLUSHY PUNCH
Makes about 3 gallons- see beverage planning page for help on amounts

With the added fruits, this has a richer, fruitier taste than the more icy punches.

3 4 ounce Jello, flavor/color of choice (lemon, tangerine, strawberry)
9 cups boiling water, boiled with
2-4 cups sugar to make a simple syrup.

Mix above together.

2 (46 oz.) pineapple juice
4 to 6 bananas
1 (18 oz.) can crushed pineapple in juice
1 qt. strawberries, OR 1-2 pounds frozen strawberries or other berries
4 c. warm water
pureed in blender in batches, adding the water as needed to help it puree.

Mix the two batches. Freeze the above 1 quart at a time in quart containers or gallon ziplocks baggies until ready to use. When ready to serve, remove from freezer 3 hours ahead. Let thaw to slushy stage; add ginger ale and serve at once. mix 2 quarts of the above with up to 2 liters of ginger ale or Sprite or 7-Up, the mixture will then become slushy.
Can use half as much sugar.

AQUA FRESCA
This slushy fruit drink, which translate literally as "fresh water," is served all over Mexico and fast and easy to make at home. The key is to strain the pulpy fruit to make a clearer liquid. Instead of melon, you could use strawberries, pineapple, mango, or any fruit that is soft enough to puree.

This drink is prepared with very little added water. It is delicious without any sweetener, especially if the fruits are sweet; how much you may want to add is a matter of personal preference. If you do add agave or simple (sugar) syrup, be careful not to over-sweeten the aqua fresca, or it won't be as refreshing.

Ice is usually NOT added. If you need to ice it, I suggest you freeze cubes of the aqua fresca itself and use those.

Strawberry Watermelon Agua Fresca Recipe adapted from http://simplyrecipes.com/recipes/strawberry_watermelon_agua_fresca/

Ingredients per quart

* 1 pound diced watermelon (without rind), about 3 cups
* 8 ounces strawberries, stems removed (about a pint)
* 1 Tbsp lemon or lime juice
* 1 Tbsp sugar
* 1/4 to 1/2 cup cold water

Method
Can be made one day ahead and chilled.

Put all ingredients into a blender and blend until smooth. If you have seedy watermelons, you can strain the purée through a mesh sieve, to strain out any pulpy pieces that didn't get broken up in the blender. Adjust the ingredients to taste.