Veterinarians have evening hours.
Your kitten won't be able to disturb the whole movie theater with its crying. Hell, you don't even have to take the kitten with you, and if you don't, you don't even have to worry about whether or not the sitter is available tonight. Your kitten won't grow out of those cute but expensive clothes within three months. Kittens look cute if they haven't had a bath this month. No one will accuse you of being an unfit mother if you don't want to breast-feed your kitten.