My DD (15) and I did the 24 hour day last year and we loved it!!!

Wish we could go again this year......
So we felt like we had time for everything we wanted to do.......
Here was our 24 hour experience.
We were up at 4:30am and got to the bus stop at AKV by 5:15 and NO ONE was there..Weird! Then a few others showed up.
We got too MK about 5:45 and to the gate in time for the kick off at the train station! It was so much fun!!
Then we got into the park at 6am and we pretty much had the whole park to ourselves till after 9am...So fun to be in MK at dawn!

Photo pass photographers were out and we got some great pictures at dawn. We rode anything we wanted and had a breakfast at Gaston's tavern.
So around 11am it started getting very busy!!!!! So we purchased our 24 hour t shirts and headed back to AKV for the afternoon...We napped and swam and ate a late lunch..
That evening we headed back to MK around 9pm and that is when the madness was in full force!!!! Mainstreet USA was so packed we could not even get through the sea of people.
Josie and I pushed our way through the masses of people just standing in the middle of Mainstreet waiting on Wishes I guess..Cast members should have kept a path clear for people coming into the park. It was crazy!
Once we got through into Tomorrowland things were much better. We staked out a place for Wishes and the projection show by the rose garden.
Then I believe they did it again at Midnight and we sat right in front of the castle then.
So the rest of the night was fine..It was more crowded than I expected at 2am, but the lines were not that long for anything.
Funny to see people sleeping on benches and laying on the ground watching the Monsters Inc movies...
We rested for a bit at the Tangled charging station.
So we pretty much made it till 5:45 am when Josie had become sick to her stomach from drinking Lafoue Brew at 3am and then riding the Tea cups!! Not a good idea!!
So we headed out as the sun was coming up! It was a wonderful experience and I will do it again. Hopefully next year!
So since you are Solo I say go for it!! You will have a blast!