That is quite a difference!

Do you have to pay a viewing fee for the fireworks at all on top of that?
I wouldn't think so, since you're not inside the park. The viewing fee is sorta like paying a reduced admission price to go into the park just for the fireworks.
Can you still do the ice cream station? And isn't mousse kinda the same texture as cheesecake? I've never had that before.
I didn't post the rest - here ya go! (BTW: Mousse is like light, fluffy pudding)
Buffet Dessert Enhancements
Fruit Skewers w/ Mandarin Raspberry Coulis
Mickey Crisped Treats Chocolate Dipped Mickey Ears
$9.00++ per Guest per item or $60.00++ per dozen per item
Add to your Buffet Dessert Party for $7.00++ per Guest per item
Giant Cookies Chocolate Chip, Oatmeal and Sugar
Brownies Chocolate Fudge
Blondies Caramel Cream
Crisped Treats House Made Squares
$8.00++ per Guest per item or $46.00++ per dozen per item
Add to your Buffet Dessert Party for $6.00++ per Guest per item
Petit Cookies
Assorted Macaroon, Biscotti and Tea Cookies $8.00++ per guest Add to your Buffet Dessert Party for $6.00++ per Guest
Fresh Fruits Berries and Chocolate Cream $7.00++ per Guest
Premium Cheeses Grapes, Crackers and Baguettes $9.00++ per Guest
Chocolate Shots (Venue may limit this option)White Chocolate with Amaretto Milk Chocolate with Hazelnut Dark Chocolate with Tangerine All served with Berries, Lady Fingers and Tea Cookies $8.50++ per Guest per flavor Add to your Buffet Dessert Party for $7.00++ per Guest per flavor
Frozen Smoothies (Venue may limit this option) Chocolate Mint Raspberry Chocolate Peanut Butter Chocolate Caramel Cream French Vanilla Cappuccino Chocolate Cappuccino Choice of one flavor $5.00++ per Guest Choice of two flavors $7.50++ per Guest
All buffet dessert enhancements are based on up to 1 hour of service
Buffet Dessert Action Stations
Hot Fudge Sundae Flambé Vanilla Ice Cream, Hot Fudge, 151 Rum, Citrus and Butter Whipped Cream, Nuts and Cherries $13.00++ per Guest Add to your Buffet Dessert Party for $8.00++ per Guest
Caramelized Bananas Flambé Vanilla Ice Cream with Bananas, Brown Sugar, Banana Liquor and Butter Lady Finger Cookies $15.00++ per Guest Add to your Buffet Dessert Party for $9.00++ per Guest
Pineapple Rum Flambé Coconut Ice Cream, Golden Pineapple, Malibu Rum, Brown Sugar and Butter Cinnamon Sugar Tortillas $15.00++ per Guest Add to your Buffet Dessert Party for $9.00++ per Guest
Black Forest Flambé Chocolate Ice Cream with Dark Cherries, Brown Sugar, Kirshwasser and Citrus Brownie Pieces and Whipped Cream $15.00++ per Guest Add to your Buffet Dessert Party for $9.00++ per Guest
Petit Soufflés (Venue may limit this option) Grand Marnier Baileys and Cream Chocolate Amaretto All served with Vanilla Bean Sauce and Raspberry Coulis $18.00++ per Guest Add to your Buffet Dessert Party for $12.00++ per Guest
Crème Brule Served with Fresh Berries, Whipped Cream and Tea Cookies $18++ per Guest Add to your Buffet Dessert Party for $11.00++ per Guest
Deluxe Cheese Station Array of Artisan Cheeses with Breads, Fruits, Chutney and Nuts $12.00++ per Guest All Dessert Action Stations are based on up to 1 hour of service