If you have a pool, spa, or enjoy spending time at the lake you will find plenty of things that you "need" here. It's usually best if I join my husband on his adventures to this store or he buys too many goodies for the pool.
One half of the store is dedicated to all of the fun items you'd want for the pool or lake. They carry every type of float you can imagine from cute floats to floats with cup holders. There are also pool toys, fitness related items, and goggles.
The other half of the store is dedicated to supplies, pool covers, parts, and chemicals. These are the items you would actually need for a pool or spa. We haven't had to use this service, but I've heard that they can test pool water to determine which chemicals would be required to correct water issues.
Customer service is going to be highly dependent on the time of day since they sometimes are understaffed. One Saturday we were shopping for a pool cover and offered plenty of help with getting stock from the back and loading our car. Another time my husband tried to stop on the way home from work and they only had one employee working. Another customer was in the store having their water tested and the lone employee helped them for 45 minutes while the line to purchase items stacked up.
I'm sure that many of the items here could be purchased online for less, but sometimes it's nice to shop in store and see items in person.