I've been using a mooncup for five years.
I have very heavy periods, I need to change every four hours or so during heavy flow days. I take a bottle of water into the loo with me & rinse it out when I empty it, but that's me, its fine to wipe it with tissue instead.
I also use a washable pad in addition to the mooncup on heavy days, generally it's not really necessary but it reassures me.
Since using the mooncup I've found my usually very painful periods have stopped being so painful, they're also shorter last a week opposed to ten days!
The mooncup is very comfortable, I can't feel it once inserted, it's worn low down so inserting and removing it is not as grim as people would at first think, I don't sterilise my mooncup that often, just once after each period, it does take a bit of getting used to finding the most comfortable way to insert it and getting the seal right takes a bit of practice.
I've never ever had any problems with it ie no thrush or cystitis or anything like that.
Weirdly I have never gotten on with tampons, and used pads before MN introduced me to the mooncup.