The only difference the absence of rakes makes in our bunkers is that there aren't rakes there. Most people never used them anyway, our bunkers have always looked like a platoon of infantrymen marched through them.We lost our water coolers on the course many years ago in Canada as the result of a couple of guys not doing their jobs at a water treatment plant. A lot of people got sick, a bunch died and the rest of us lost the privilege of having access to water as a result. So nothing really changed due to Covid for us in that regard.
The ball washers disappeared, but honestly I would have a hard time to remember the last time I ever used one. Between my wet towel or a bit of saliva the golf ball remains clean. Again, no real difference for me.
Rakes in bunkers - again, being the first group out in the morning usually means that our traps haven't been raked. We always lived by the "lift, rake and place" rule, so now we just use our feet to flatten the sand. I do wish other golfers would remember to push some sand around with their feet AFTER they've hit their shots, but I digress. These people probably don't repair their ball marks either.
We have two par threes at my home course that could really use some of that divot mix. They switched to only providing sand about 4 years ago, roughly when they opened the new tee, and it's pretty much reached the point where it is 80% sand and 10% grass. Last time I checked sand doesn't sprout grass - you need seed to do that.At least your sand bottles don't look like this