So about 10 years ago I was in your position. I do a lot of gigs where it's just me or me plus one guy to help setup/packup.
And I wondered about a reel. My options were a reel or, build a really fancy box to house the core (more on this later).
So I went the reel route and within a few weeks I was regretting my choice but I stuck with it until I went digital and now I just have a loose 4-core cat 5 that I roll like a mic cable albeit a 50m one... (and a 100 but only take that one out if I need it).
So back to the reel.
As others have mentioned, works well with two people.
If you have one person, because my reel had wheels on the bottom, I had to kind of straddle the reel and crank. One hand turns, the other needs to guide the cable in nicely - left to right, right to left, left to right and so on.
On my own I would need to clear the path of all obstacles before rolling up. In some cases I was practically rolling the cable as I would if I didnt have a reel only to dump it next to the reel and then need to reel in again... more wasted time.
I also found that the cable over time developed a bit of a curve to it. I guess because it's not over/under it's always going around the same way..
I also had my reel kindof custom made; I had the patch points on the reel itself and because there was not a lot of space for a 32ch core, all the XLR's were right next to each other. This makes for really tight patching.
But, if you've got 50m or more of 24+ch analogue core, you're not really going to go well just rolling it loose. You'll want some kind of container for it be it a reel or box.
The other idea I had was to make a roadcase where the lid would have a notch in it to allow the cable to come out. So take out as much as you need and leave the rest in the box. This is a common practice at most large events.
But instead of having a traditional stage box which i'd need to place on stage, I was going to have one side of the roadcase unclip and have a patch panel right there. So the box would live side of stage (as a reel probably would); and then could patch directly into that. Options also included female XLR panel mounts for a mic split to monitors. Being one man band kind of setup I wasn't going for multipin disconnects; favouring simplicity/repairability of just XLR connectors.
Ok that's my .04AUD...
Andrew