if there is a possibility you will go early i think you DH should understand (and so should his family).

The other only option is to go with and inspect the hospital in case.

It is very important your DH is there with you! just explain this to him

Both my children came early. DD was 1 week, DS 3 weeks. so it is very possible it may happen.
Also i didnt have either of my children and the hospital i was booked into.
DD was born in a major hospital 150km from where i lived
and DS was born at home