Boil the spaghetti. Cut the bacon in small dices and fry. Mix the eggs, the cream and the cheese. Taste with pepper and salt.
Melt the butter and add the egg mixture. Stir untill it starts to thicken. Mix it with the spaghetti and the bacon dices.
I always serve the spaghetti with foccacia bread sprinkeled with Maldon salt and extra virgin olive oil (not nuts as described in the recipe you find if you follow the link), and often a salad of ruccola, cherry tomatos, mozzarella cheese, olive oil and basil leaves.
Good luck with your party Lisbeth. Give your friends my greetings.