Language / Usage of emergency situations in Polish [3]

Hi could someone help me out please.
I'm trying to learn a bit more Polish to supplement some of the modules I'm doing in my firetraining.
I can speak a few words and understand some of the pronunciations and spellings

How would you ask "How many people are in the house?"

I put this in google translator and got "ilu ludzi jest w domu"

Is there anybody trapped in the house? I got -
Czy jest ktoś uwięziony w domu
is this right

can anyone elaborate on these

Many thanks
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Language / Birthday wishes / jokes in Polish? [9]

Cześć my grandads birthdays coming up. He's Polish and in his 90's. He's always very impressed when I write his birthday card out in Polish.

The only problem is I've been writing the same basic thing for the past few years.
Does anyone have any different /creative ways of saying happy birthday and well wishing in Polish.
(Is there a Polish moonpig)
(are there any good Polish birthday jokes)
Many Thanks
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