I've used pre-check at tiny regional airports (where there is no dedicated lane, you just get a laminated pass that tells the agents you're pre-check) and it's still worth it there.
You ain't kidding.
Over the summer I had to pick up my son who flew as an unaccompanied minor. You can't use pre-check lines to do get to the gate for that. The regular line had to be at least 300 people deep and I'm probably undercounting.
Luckily the often forgotten A Bridge security line only had a few people in it.
True, but if the bride had an old pre-marriage address on file and the groom put down the address to their new house when enrolling for C&A, that could cause a mismatch
You're under no obligation to tip anything above the daily gratuities. But if you feel that room steward deserves more, you put in that envelope whatever you think they deserve.
There's really no right or wrong amount.
Since they've already jacked up the drink package price, I would imagine increasing the cocktail price would just be to get people to start buying drink package again