" I find that when aligning up the start arrows with the start mark tends to put the film close to the lead edge of the film"
If I follow the guide arrow, this ends up putting the first frame close enough to the edge of the film that depending on how my lab loads it into their automated machine, the frame can be ruined by the light that hits the start of the roll. Not an issue if you are home processing and load in complete darkness.
The camera has built in double exposure protection. No red flag, but you just can't hit the shutter until the film is advanced.