I have learned to only drink from a cup with a lid and straw. My tremors and flailing will make a mess out of everything. I've been doing this for years though and it has become habit for me.
Now, food on a fork or spoon? That's a whole different ball game and one I am not so sure how to handle. I have flung food not only at home but at when eating out or at other people's homes. It's so embarrassing and yet funny at the same time. People do not expect a 50-year old woman to fling food at them.

It does make a mess so I am more careful about what I eat when I am out.
Kitty - Like you, it is so hard to get up and down to clean up messes. I think if I just spilled water, I would leave it. It'll dry and not cause any issues, unless it is carpet or real wood or something that damages easily. I have tile in my kitchen and would have just left the spilt water there. Yesterday I made sweet potatoes. It was frozen mashed sweet potatoes, actually, and all I had to do was heat it up, which went fine. I tested it to make sure it was warm enough and in doing so, everything on the spoon went flying all over. It was kind of funny but at the same time it was the extra energy I was going to have to exert to clean up that tiny spoonful of mashed sweet potatoes. The counter isn't too back or anything above waist level. It's waist level and down that's hard.