At the moment there is a festival on here that comes at the beginning of November each year & there are fireworks on the two Saturday night it runs. Tonight is the last night. I promised Zander we would go, but now I don't think we can

Aaron was supposed to go to a bucks night, but he's too sick now so he's staying home (in bed at the moment) and Juliette is also sick. I now feel like I'm getting it too, sore throat is coming in, so it's really not a good idea for me to go out have & have a late night when I'm coming down with a cold.
So what do I do? Do I tell him we can't go or just hope he doesn't realise? We can hear the fireworks from our house, but he will be in bed by then & more than likely asleep. How do I make it up to him???