Covid & socialising

Hi ladies, I was just wondering what everyone’s opinions are on going against government guidelines...I live somewhere that we are banned from entering others houses while they try to control covid.

I am bridesmaid for someone who has invited all of her bridal party over to try on wedding outfits and make a night of it with drinks etc..I have a health problem so I am being cautious anyway but I feel like if I say no I will be the only bridesmaid not attending?