correct
running a BBQ from the gas bayonet you will not require to have a hose with a built in regulator
however you will need to buy a gas bayonet hose if you don't already have one
generally see bayonet hoses in 1.5 , 2 and 3 meter lengths
also check as the fitting that goes to the BBQ can be 1/4(small) or 3/8 (large) ( threaded in sae or bsp)
actual webers are 3/8 sae
seems to me that old BBQs were 1/4 and newer ones are 3/8 in most cases
Adam