What if I have a housewarming drink with my colleagues one day?

You can communicate and adjust in advance, or you can co-organize together.

If you move with your colleagues for one day, you can negotiate with your colleagues to change the time a few days before the move, so that friends who both know can participate, without damaging the relationship between the two sides.

If colleagues don't agree to change the time, they can negotiate to organize it in the same hotel, so that both colleagues can participate and promote the feelings between colleagues.