Hosting a Champagne tasting at home is about small details, not special gear....

https://cashsexcellentinsights.brightsora.com/posts/tulip-glass-vs.-flute-for-champagne-tasting-which-is-better

Hosting a Champagne tasting at home is about small details, not special gear. Chill bottles to 8–10°C, use tulip-shaped glasses and pour modest tastes