Choosing half-size champagne bottles for a party can be a great idea for a few reasons. Firstly, they are perfect for individual servings, which can be more convenient and prevent waste. They also add an elegant touch to the occasion and can make for a great presentation. Additionally, they are easier to handle and pour compared to full-size bottles, making them ideal for parties with a larger number of guests. Finally, they can offer more variety if you want to serve different types of champagne without committing to full-size bottles.