Use when outcomes are uncertain or when you want to show willingness to adjust to situations. The weather might change our plans, so let's play it by ear.
Pro Tip 2/3
Informal Setting
Best used in casual conversations rather than in formal or professional scenarios. It's just a casual meet-up, we'll play it by ear.
Pro Tip 3/3
Not Planless
Doesn't mean there's no plan at all, just that the plan is flexible. We have a few ideas for our holiday, but mostly we're playing it by ear.