As both an owner whose horse gets soaked “feed” (beet pulp with supplements) and one that has been on staff with horses that had soaked feeds a couple thoughts.
Beet pulp shreds only need about 5 minutes; even less if you use hot water so that isn’t a huge time sink to do at time of feeding. My first matter of business when I would feed would be to soak anything that needed soaked for that feeding, then go do water and hay etc then feed. That was more than enough time for beet pulp to soak even in the cold and didn’t add more than a minute or two total.
For the horses that had either hay cubes or pellets where soaking took longer, their meals were always prepped ahead of time; so dinner hay cubes would be soaked at breakfast time. We didn’t have a climate controlled feed room and didn’t have any freezing issues in the winter, but the summer I always thought it was a long time for stuff to sit and soak in the heat and humidity.
I prep my geldings meals for the barn in glad containers. I also have a pitcher with a line for how much water he needs with it. His feed and water go directly into his ground pan to soak and eat. I keep an eye on when that needs a good cleaning so the barn staff doesn’t have to do that either. I wasn’t sure how this would all be received at our new barn but they actually seemed happy with the approach so maybe something like that could help anyone in a soaking situation.
As far as asking for a reduction; until you know for certain that you would have to provide your own forage for the foreseeable future, I wouldn’t even bring it up. If thats where things end up, then maybe a carefully considered conversation depending on the complexity of what the new feed routine would be.
When it’s one person asking, it often doesn’t seem like it should be an issue. If you have 5 or 10 people all starting to want different plans…that is when the time can add up quickly and it can become a big PITA for a BO and staff. And an opening for others to try and work out other cost cutting scenarios which is why I imagine places can be less accommodating about these things. For example, I have never used whatever concentrates my barn offers and have never asked for a cut on that even though it would be nice. And I supplement my own additional hay pellets for our auto feeder. Nessecary evils I suppose.