In gunboat, depending on the map, if there are neighbours with NMRs, sometimes I will Save but not Ready, and check in closer to deadline as to whether they're still NMR. If they are still NMR and it's close enough to deadline, I might change moves to assume that they are going to NMR. If I have no neighbours with NMRs, then I'll just press Ready after double checking.
In non-gunboat, I would rarely press Ready at all anyway, even with a nearby set of NMRs. I might press Save on an initial set of orders before talking to anyone, and I suspect many players would do that (but hopefully do some talking ASAP also).
But like ATC, I'd take a set of Ready orders without talking as an indication of "well, I've got orders in and I'm not talking to you" and something probably needs to be done about that (usually trying to talk, but if there's no talking forthcoming, it's usually a bad sign).