Okay, I know this thread is old, but I experimented with some of the ideas here on my recent trip, and I wanted to share reviews.
- Jockey slipshorts: Mixes results, but good overall! I bought a pair from Target that is the JKY by Jockey brand, and they are awesome. They stay in place all day - I wore them under a dress to HS and walked all the way to the Yacht Club and back for dinner very comfortably. Then I have some actual Jockey ones I ordered from Amazon; they are good, but the waist rolls down (I bought two sizes, and they both do this, so I'm not sure if it's an issue of being too big or too small.) I wore these Jockey ones a couple times, including walking around MK for several hours after dinner at 1900 PF. I had to pull up the waist a lot. The ones from Target are also a lighter material. I highly, highly recommend the JKY by Jockey from Target slipshorts!
- Dresses: I bought two for Disney and loved them both:
- First is THIS Toad & Co. dress from REI, and I am in love. I wore this at Disney Springs and Hollywood Studios - light, comfy, and provides good coverage. I wore a sports bra under it with those JKY skipshorts and it was fantastic. I wore it with Skechers Go Walk shoes and looked totally cute - it was my birthday, so I had to look cute!!
- Second is this Icebreaker dress, also from REI. It's super, super light and make of a stretchy merino wool. It's not transparent enough to necessitate a camisole; I wore a white sports bra underneath with no show-through issues. However, it is a bit short, so I wore it with mushroom-colored cropped leggings. It is not as perfect as that Toad & Co. dress, but it was wonderful. I wore it at Animal Kingdom and was comfortable, and we all know that AK is the hottest place on earth.
So, after this trip, I can definitively recommend JKY by Jockey slipshorts from target, and stretchy, knee-length dresses made from technical fabrics for walking around the parks. I normally wear running shorts and a moisture-wicking top, so it was awesome to feel just as comfortable while also looking cuute!