1. If you feel sick/ill on a trip....go get doctor/clinic advice from the hotel staff. Don't ask some local taxi driver for a recommendation.
2. If on a trip with temperatures mostly above 80 F for the day....start the day with a purchase of a bottle of water. If above 90 F, get the larger size water bottle.
3. Once you establish your travel plan, the airline deal and the hotel selected....don't skip the airport-to-hotel plan or the hotel-to-airport reservation.
4. On your carry-on bag for the plane....carry enough clothing to get you by for the 1st 24 hours at the destination....just on the odds of your bag getting lost.
5. Don't carry a $1,500 camera around for normal shots of the trip....get a simple $250 Sony camera.
6. There are certain countries (particularly in Asia) that put a lot of spice into food. You might want to remember that. In countries like Denmark, it's the opposite.
7. If a resort offers a drink-inclusive deal....meaning they provide beer, wine and some type of cocktails....just be aware that they won't be premium quantity. That wine by the 3rd day will taste like pure grape juice, and the cocktails will be so weak....that gulping down ten drinks in an hour won't get you drunk.
8. On long extended trips....some hotels offer a washer-dryer room (meaning you can do your own laundry). Most don't offer this situation. You might want to plan ahead and ask this question....if staying ten days in Rome, or Madrid.
9. Resorts that offer dinner buffet as part of their package....usually offer a wide-variety of foods. If offered, it's usually worth the money.
10. Most hotels have a map of the city to give you (free). If you ask nicely about no-go zones....they will use the red-pen and mark the map. This might be handy to know. If they mark it....trust in their knowledge. No-go zones exist for a reason.