Lateral Thinking Puzzles. Let's do it again!

Fall isn’t significant. The same theme could just as well work in any season.

Does the wordplay involve

Anagrams?
Homophones?
Abbreviations?
Rhymes?
Acronyms?
Rebus?
Palindromes?
Oronym?

Slightly oronym. Which incidentally I had to look up.

Do the costumes represent individual theme words or phrases?

If so, are the individual theme words all parts of a whole theme word or phrase?

Did the theme have to do with the name of the school?
Something else specific to that school?
The name of the city/state/region where the school is located?
Something else specific to that place?

Is it salad dressings? Say, French, Italian, Ranch, and, maybe, Thousand Island?

(No, wait: Polynesian?)

Ding ding ding! @The_Other_Waldo_Pepper got it. And I think @SurrenderDorothy might have as well, but she was coy about it.

(except the seniors were actually Caesar dressing, not Italian, but close enough)

OK, I’m going next. I have no idea if this is too easy, or too boring, or whatever. I’ve never done this before, so please bear with me.

A man urgently tries to send an important message. He is too late and misses a deadline. At first this looks like a failure, but as a consequence, the man makes a lot of people happy at a later time.

Did this really happen?

Was the message abot some sort of conveyance?

Was something invented or discovered as a result of the missed deadline?

Did the man suffer any negative consequences as a result of being unable to send the message on time? If yes, did they involve losing a job? Being demoted to a position with less responsibility?

Would anything bad have happened if the message had gone through on time? If yes: to the man? To other people?

Did the message ultimately reach its destination?

Would the message, had it gone through, have made a potentially bad event more likely to occur?

Would the message, had it gone through, have made a good event unlikely to have occurred?

See answers above

Apparently I don’t know what conveyance means. I meant a form of transportation, like cars, trains, etc.

Answers above

Or maybe I don’t know what conveyance means, perhaps it can mean transportation just as well as property transfer. Anyway, I guess some form of transportation would have been involved in delivering the message, but the content of the message was not about a means of transportation.

The message had no bearing on events that were objectively good or bad, in the sense of averting a disaster or otherwise saving people’s lives. Some people, at the time, would have preferred the message to go through and others were quite happy that it didn’t. In the longer run, however, it’s fair to say that many more people were happy as a result of what the man did after the message had failed to go through.

Was the reason the message failed the cause that lead to the discovery?

Was the discovery made because an alternative to the message information had to be found?

Did this happen in wartime?

Did it happen in the nineteenth century? Twentieth? Twenty-first? Earlier?

Would it help to know the format of the message? If yes:

– Written on paper?
– Spoken message delivered in person?
– Spoken message delivered via technology (radio, telephone, audiotape, etc.)
– Telegram?
– E-mail / text / other electronic communication?

Was the thing that was invented or discovered a creative work, like a song or movie?

Was the message late because the sender experienced a delay in sending it?
Was it late because the messenger and/or delivery service experienced a delay in transit?
Was it late because the recipient was not available to take delivery in a timely manner?

Was the message sent via the postal service (of whatever country or countries)?

See above.