[Grammar] Correct or not?

[marker]

I need your help again. I'm wondering which of these sentences are correct.

My advice is to be careful in this place.
My advice is be careful in this place.

And one more question. Does the sentence below sound good or not?

He decided on a short stay at the hotel.
he decided on a long stay at the hotel.

 

[5jj]

My advice is to be careful in this place.
My advice is, "Be careful in this place".
My advice is: be careful in this place,
I advise you to be careful in this place.

Please ask completely unrelated questions in a new thread.

 

[marker]

My advice is to be careful in this place.
My advice is, "Be careful in this place".
My advice is: be careful in this place,
I advise you to be careful in this place.

Please ask completely unrelated questions in a new thread.

I'm sorry, you're right. I'll post a new thread then.
Thanks for the answer

 

[Barb_D]

Thanks for starting the new thread.

I know that a new post to say "thank you" seems like the polite thing to do, but we actually prefer it if you click "Like" on the post that answered your question. That tells us that you saw the answer and understood it.

Of course, if you saw the answer and did NOT understand it, you can like it anyway ("thanks for trying!") but then ask another question about it in the thread.

When we see a thread has a new post, we think "Oh, new question!"

So: "Like" and no more questions = I got it!