I stood in line at the main check in counter but after standing in line for 20 mins. I was told to go to lagoon tower to check in. I don’t know if taxi will drop you off at lagoon tower but if they do it would be easier on you. It’s a walk from main check in counter to lagoon tower if you have a lot of luggage and a toddler. I don’t know about cots but Hilton may have traveling cribs available. I opted for Spedi Shuttle for my Hawaii trip so I was dropped off at the Hilton pickup/arrival area which is in front of hotel so we had a ways to walk to get to main front desk. There is a separate area for all Uber/lift drop off & pick ups.

Hilton Hawaiian Village has a parking structure. You can pay for it daily or hourly. There is street parking across the street near the buildings by Wailana Coffee House. Maybe a 5-10min walk. Or you can park near the lagoon or by the beach in the back. There is a small lot that’s free parking. It’s closer to the Ilikai hotel.

On our page on Hilton's website, we have the rooms & suites labeled either Kalia or Lagoon for the respective towers.

It depends on what your kids and teens like to do. As far as beach activities and water fun, it’s endless! At the lagoon just before the ocean access, they can rent all types of riding flotation vehicles, and rings. At the ocean access, there are kayaks, canoes, flotation vehicles, and boards. It’s all within a very short distance. There is Ala Moana shopping mall a few blocks away and other Waikiki shopping as well. There are catamarans that go out and sunset trips, and a Hilton luau or others in the area, an aquarium at the far east end of Waikiki Beach where the zoo is, and a few types of crafts given at the hotel at special times. They are right in the thick of it! There are also three or more pools on site and one of them is particularly good for kids with big waterslides. The workout gym has been updated and is large enough to accommodate everyone. I don’t think anyone will get bored!