Crankin, you should be able to find "whipping cream" in the dairy section of your market. If it's not labeled as such, just get heavy cream. You need the butterfat to allow it to whip up. The amount of amaretto is just about right and I don't think it will be "boozy." It should impart a nice almond-like flavor.
When following the instructions for making the whipped cream topping, be careful that you don't overwhip the cream. It doesn't take any time for the cream to turn to butter if you whip it too much. Just take it easy.
Enjoy your nice dessert.
"As a girl I had zero interest in the stove." - Julia Child
This is real inspiration. Look what Julia became!