That depends on the helicopter. The one I have is made by Syma and goes 10 meters high. http://www.technupower.com/syma-s107-mini-3ch-rc-helicopter-370.html
Any RC helicopter would be safe for outdoor use. Stay away from trees and power lines, just as you would with any other outdoor 'toy'. Do not use if there are any signs of bad weather approaching.
I have this one from Target and it works very well. It is also reasonably priced.
70 ft
RC Helicopter
A good website to buy rc helicopter parts from is hobbypartz.com that is a good website to get anything and everything you need from there. I buy from there all the time.
It really depends on the RC Helicopter. I had a very small helicopter that made very little noise, but my new (and significantly larger) RC copter makes a fair amount of noise. Most RC Helicopter make a buzzing sort of noise, that is reasonably loud. The volume depends on the size, how high it is going, how fast, and what manoeuvres.
Amazon does have several types of T-Rex rc helicopter medels to purchase on their website and accomodations to go with the helicopter can aslo be found there in the toy and games department.
if it says outside or outdoors on the package it can
One can buy an indoor RC helicopter at Amazon. Amazon also sells other items and different models of indoor RC helicopters, varying at different prices.
The Airwolf RC is a Helicopter RC that uses a big chopper wing at the top to help lift the Airwolf RC Helicopter to let the motorized helicopter fly.
No, you can only get an RC Helicopter in the presents while, you're taking a walk.
Go on a walk and you may find an RC helicopter as one of the question marks. Hold A to take off, the D-Pad to maneuver, and L to change the camera view. Note: They can be sold for $200.