Quick update..... Came back with case with small fishing rod in it. Girl on the counter didnt bat an eyelid.
Got a few funny looks walking through las vegas boulevard and into the hotel carrying it though. Guy in the lift asked me if it was a case for carrying guns. I replied "yes". He asked if it was empty. I replied "no" ( the fidhing rod was in it).
He got out of the lift pretty sharpish.
If you are ever over there, i can thoroughly recomend the bass pro shop near the silverton hotel