If you want to show a plan of your project with area tags but you don’t want those purple area boundary lines to show, you can turn them off with a Visibility/Graphic Override. The trick is knowing where to find them – they are on the Model Categories tab but they aren’t classified under Areas like you’d expect. Instead, they are found within the Lines category. Just uncheck the box to hide them.
Save time by creating a view template with the boundaries hidden that you can then assign (not apply) to all your area plans. If you need to switch them on and off, you’ll only have to make the change in one place for it to affect all the area plans.
Other visual tweaks that will make your day happier: bright and sunny realistic views and super-clickable temporary dimensions.
Rocks and Pebbles 
THANK YOU, saved me time hunting.
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You’re welcome! I’m so glad you found it helpful.
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Any chance there is a way to still see the line it in the view (so you can add or edit the areas), but just have it not print?
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I don’t know of a way to do that in Revit, unfortunately. You could toggle them on and off as needed or you could set up two different views (a working view with the lines on and a presentation view with the lines off). Here’s a forum post where people discuss various workflows (it’s about room separation lines but it’s all applicable to area boundaries as well). https://forums.autodesk.com/t5/revit-ideas/option-to-not-print-lt-room-separation-gt-lines/idi-p/6852471
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