I've never stayed there, so don't know if they are available through them, but a quick phone call would answer your question. If you are asking, since you are staying there, can you rent the cabana or umbrellas elsewhere, the answer is yes. In fact, we have done it many times. They Hyatt has a person right on the beach from whom you can rent one. If you want to venture away from that part of the island, say down to the area, we have also rented them from the Four Seasons.
Are you staying at the Kaanapali Beach Hotel or the Kaanapali Beach Club? The Club is the former Embassy timeshare property and is not officially on the stretch of Kaanapali beach where the resort hotels are (Hyatt to Sheraton). The last time I was at the KBC a couple of years ago they did not have cabanas or umbrellas to use or rent on the beach. This area of Kaanapali has a lot of condo type properties and the beach in not the best (IMHO). You can however drive to the official Kaanapali beach resort area and rent umbrella/lounge chairs from the many resorts. I have never stayed at the Kaanapali Beach Hotel which is within the Kaanapali resorts area so I don't know exactly what they offer. As suggested I would call where you are staying and ask. Have a great trip!
Sailfish Splash opening: Sailfish Splash Waterpark opens for the 2017 season March 11 from 10 a.m. to 5 p.m., and remains open for spring break through March 19 from 10:30 a.m. until 5 p.m. daily. The park includes a new attraction this year named Wiggly Waters, which features a small obstacle course of sea creatures that kids must navigate across with the help of a cargo net. Day passes for children ages 13 and older are $13.95, while children are $11.95. Seniors 55 and older also pay $11.95. Season passes are available for $84 for adults and $72 for children and seniors and include unlimited entry for the 2017 season, plus 20 percent off food and beverages, birthday party packages, cabana and umbrella rentals and day passes for accompanying family and friends. To purchase tickets online or for more information, go to .
Shelter Outdoors produces a variety of outdoor shelters, cabanas and umbrellas, such as the P6 model shown here.