I am an experienced Travel Researcher who has traveled to areas of the globe and have the benefit of knowledge from it.
Recently I have traveled to Hawaii and researched it to within an inch of its life. My document was 26 pages long. To be clear, I am not a Travel Planner, I am a Researcher.
Things I look at start with the airport you fly out of, handicapped? you will know where the elevators and bathrooms are, how long the TSA line is, the distance from there to the gate, and where the baggage claim areas are. The stores and restaurants and where they are in the airport, tips on traveling (buy bright pink tape at Walmart and make a large x on each side of your luggage)
I have been told I have been meticulous, sometimes obsesive.
The research will include airports, your hotel, restaurants and such around or in the hotel/resort, tips for travelers, laws you might need to be aware of, etc, etc.
Thanks you for your time.