When we are planning on going somewhere by ourselves, we'll set a departure time of "ish", but that usually means within ten minutes or so of that time and involves only the two of us.
When you are meeting someone, then you should be prompt and you should let them know if you'll be running late due to an accident, worse than expected traffic or whatever.
If I am expecting someone at a given time, I'll give them fifteen minutes and then try to call them. If I can't get them or they don't reply with maybe five minutes of that, I'm gone.
There are times when you are at the mercy of a third party, like when you're awaiting a delivery requiring a signature.
The delivery window given by any package carrier is generous (to them) at best.
When you are meeting someone, then you should be prompt and you should let them know if you'll be running late due to an accident, worse than expected traffic or whatever.
If I am expecting someone at a given time, I'll give them fifteen minutes and then try to call them. If I can't get them or they don't reply with maybe five minutes of that, I'm gone.
There are times when you are at the mercy of a third party, like when you're awaiting a delivery requiring a signature.
The delivery window given by any package carrier is generous (to them) at best.