1. Smoking indoors is legal in some places. You will have forgotten this. It will not be pleasant to remember.
2. When you win on a slot machine, it will be completely unclear to you why even though the "pay line" is helpfully highlighted.
3. Lake Tahoe itself is primarily made of melted snow, which makes it very cold indeed. Nevertheless, it is unaccountably elating to swim in it. After taking the full underwater plunge, you may not laugh uncontrollably for five minutes, but I did.
4. It is possible for a bed to be too soft.
5. Miniature golf is pretty much always a good idea.