I have made a Royal Flush about 4 or 5 times, I remember one I made in a live cash game and fortunately for me the other player in the hand believed his 9 high flush was good and kept betting into me, so I made quite a bit of money out of him because every time he bet I just tanked for a few seconds then called, until I raised him on the river, Position is great when they are betting into you.
You need to be aware though I have never made one holding A/K suited, usually I make them when I am holding hands like K/10 or Q/10 both suited, but the way I look at it is you will never make a Royal Flush if you are folding these type of hands, as the saying goes, You have to be in it to win it.
When the fun Stops, STOP!