Housewarming invitation, free
Send the address once, to everybody, with a map link on it.
The address is the whole job
A griha pravesh is at a place nobody has ever been to, usually a new building with a flat number that is hard to describe. Paste a Google Maps link and the card carries it, so nobody has to call and ask which tower.
Say the puja time, not just the party time
If there is a ceremony, people need to know whether they are expected for it or for the meal afterwards. Those are two different arrival times. Say both.
Sawaal
Can guests see who else is coming?
No. A guest sees the invitation and their own answer, nothing else. The list of who replied sits behind a separate private link that only you get.