Hello David, 
I don't use OM to map on the ground, but OsmAnd, so I don't know how OM works and which tag you can use. But definetely, using https://wiki.openstreetmap.org/wiki/Tag:tourism%3Dinformation to tag "you can cheat and do not pay if the guard desn't see you" isn't good. For exemple the Lotus pond (in Sunder Nursery) was already created and just created a doublon with wron tags. Maybe your map wasn't up to date. And yes, you need a laptop to make more complicated edit to the map.

Happy mapping,