So I'm at that point where my collection has gotten a bit out of hand - got a Rolex GMT-Master II, Tudor Black Bay GMT, Omega Seamaster, and a couple others I rotate depending on where I'm headed. Thing is, I'm not great about keeping track of when each one last went in for service, and I hate the idea of one sitting unworn for months while waiting for a service appointment. Does anyone else manage a similar rotation and have a system that works? I'm thinking about staggering them so one goes in every year or so, but curious if there's a better approach that doesn't leave me watch-less for weeks at a time.