My DH was hesitant about using it too until we actually GOT it. I shipped a box down via UPS the first time we filled it and we flew in carry-ons...he LOVED that bit and that alone sold him that we weren't schlepping around a bunch of luggage!! (We also saved a lot in bag tips!

)
We have about 120 items in our Owners Locker (many of the same ones that are on vicki_c's list). Some things we have that I didn't notice on her list are some air freshner for the bathroom, packing tape, coffee filters, rubber bands, spare AA batteries, a couple of flashlights, candles, a couple of light backpacks, spray fans, 2 pool / beach bags (1 sm & 1 lg), flip flops, a collapsible cooler (to take to the pool & water parks), a couple of "blue ice" things to use in the cooler, plastic cups & straws to take to the pool, a set of sharp knives, extra plastic silverware, microwaveable storage bowls & paper plates (we use studios & need that kind of stuff rather than dishwasher detergent). It's stuffed FULL to the point that I have to sit on the lid while DH fastens it shut. I can't get anything else in it. I wish we had room to keep an air mattress & pump bcuz DS would rather use that than the sleep sofas.
We weren't able to go down this past year because we went to Europe & did one of the
DCL Med cruises instead so somewhere I have a list of my contents with exp. dates on our sunscreens, moisturizers & OTC meds. We're going down next March/April for spring break so I know I need to replace some of these items because they're from LAST year. Normally now we just fly down in carry-ons but we have booked on Jet Blue for this trip so we'll be able to have 1 free checked bag pp. This way I can take some of these replacement items (like sunscreens). And I can bring the air mattress for DS to use on this trip. Doubt I'll be able to make room to
leave the air mattress down there tho. I would have to remove backpacks & pool bags so that wouldn't solve anything for us.
I can't wait to see our Owners Locker again & am just glad that we'll be able to use it again next year. We LOVE it.

LAST year we went down 3 times so we really used it a lot then. This past year was just an "off" one for us with the whole Europe thing.