Need help in doing a business plan for opening a banquet hall.

First its not a good idea to piggyback your question on someone else's. This can lead to confusion. You should start a new thread. So I've moved your question to its own thread.

Second, I would suggest contacting score.org or sba.gov

Hi, chefwells!

This sort of question has already been addressed on a number of threads on this site. I would suggest putting the two words, banquet hall, into the search function at the top of the page.

Also, there are links to threads on the bottom of this page where people have had similar questions.

Thanks!