Places are farther apart on the West End than walking the beach, and Seastar is pretty far out. So make sure you know how far you'd be walking - the Negril Map is great for that. Seastar to the Lighthouse, for instance, no problem - Seastar to Canoe Bar, taxi it.
Also, this is one time I disagree with doing what the locals do. They walk same side of road as the cars with their backs to traffic - and depend on the car drivers to not hit them - insane, IMHO. Especially on roads like the West End with no sidewalks and some areas with no shoulder and you have to walk in the street, and even crazier at night. I was taught you always walk facing traffic - reason being if they don't see you, at least you see them coming and have a chance to get out of the way.
It won't matter to the car drivers - they are used to seeing people in the streets, just will see your face rather than your back. But it will make a difference to you - not having to depend on listening for cars coming up behind you, not having to look both behind you and in front of you as you walk on uneven pavement. Keep it simple, just walk facing traffic so all danger is in front of you. I think the reason the locals do it has more to do with ease of catching a route taxi, not safety.
