to get your sea legs
to get used to being on a boat or ship, especially to overcome seasickness · to become familiar or comfortable with a new situation or place
What's the situation?
You've just started a cruise or moved to a new city, and everything feels a bit wobbly or unfamiliar. 🛳️ This expression is perfect for talking about that initial period of adjustment! It literally means getting used to a boat, but it's often used metaphorically for any new experience where you're finding your footing.