The $100 ones (like we use) have downsides. Yes, they make wet ice. Fine for drinks or cooler topping up though. We have plastic bucket in the freezer we dump it if there's extra. Not too hard to break back up later.
They don't "keep" ice. The second the ice is done being formed, it's starts melting. It will fill the reservoir before it really melts much though. Never used one inside a very hot camper or tent though.
Noisy. During the day we don't care but I always shuit it down at night.
Kind of high maintenance. It's always needing emptying or filling it seems. I don't mind but other might.
Part of that is part of the plus. They say it start making ice in 8 minutes (or whatever it is), No kidding. Suckers don't make much ice but they have the speed.
We like ours and are on our second one. Some family had to have one becasue we had one, Used it one trip and got rid of it. Not everyone's thing. THey expected it to be like the icemaker in their home fridge and it is just not.
THere are much spendier icemakers that will "keep" ice. They also tend to be too large fro campers if you ask me. If I could have squeezed in a fridge just a tad bigger than the one I bought I could have had a "real" icemaker. But I couldn't and the countertop will do for us. They don't seem made to last a real long time. But if the current one lasts as long as the first one I'm good with it. I'm not big on buying extended warranties but it might be worth it if you buy one.