Is it wrong to ask people to wear a mask

Me

My sons 2nd birthday is coming up in February. The coldest month of the year. He was born during Covid so completely isolated and we didn’t do anything for his first birthday, makes me sad. I rented a playhouse for his birthday and would like to invite fam and friends. It’s flu season and we just got Covid took a lot of time off of work. I want fam to come bc they always complain that we never bring him around (pandemic baby problems) but some ppl are weird about asking to wear a mask. I also have an 8th month old baby. Doing invites now, should i ask guests to wear a mask/sanitize??