The "rules" are all over the place, which makes it pretty hard to comply. In late September I had a very small (about 6 oz.), sealed bottle of wine confiscated. Two weeks later we got on a flight to Scotland out of EWR with 2 sealed bottles of duty-free scotch and brandy. No problem. Ditto for the return flight and for flights in and out of Paris in December. Last week I flew in and out of Kansas City with another small, sealed bottle of wine in my carry-on. Never bothered anyone.

But thanks for the warning about SLC. I won't be flying through there with any single-malt scotch in the near future.