So as much as I have played Statdew Valley I never really experienced the multiplayer aspect until recently. Me and my daughter played most of the weekend. I have mixed feelings about it but they are mostly positive.
Playing with a friend does split much of the work and makes gather resources, mining and farming much easier.
It does sadly make buying anything 2-4 times more expensive depending on who you are playing with because all tools and storage backpacks need to be bought for everyone. That is really my only complaint but I understand why it is that way, because it needs to be.
The quality of life improvments that came along with it were fantastic tho. The ability to see what belongs in a community bundle from your inventory and stacking things like chest or crab pots in your inventory is a godsend. This is just the tip of the iceberg when it comes to improvements made, but admittedly they are mostly fantastic.
My only othet complaint is even with a wired connection we would occasionally drop our connection. Probably once an hour or so on a bad day and not at all on others. Despite those minor complaints as much as I love Stardew Valley alone, with a friend is my favorite way to play. Best wishes and may the gaming gods bring you glory.