Miss Manners: They snubbed us, we cut them, then things got awkward
Miss Manners asserts that repeatedly not responding to invitations warrants the decision to not invite someone again, thus protecting hosts' time and resources.
Miss Manners: Is my husband right that my phone alarm is rude?
If the alarm goes off in public, silence it quickly and check the environment to gauge acceptability; acknowledging your surroundings shows consideration for others.