Out of all the main levels in this game (excluding Kevin levels), this level is the most difficult (in my opinion) to get 4 stars because there's a lot of dynamics going on here. This is the literally the last level where I get 4 stars, because I have stuck for countless of attempts. Turns out, there's something you should do here.
This is the kind of level where chefs must work at all times, the deep fryer must be cooking at all times, and there must be clean plates available all the time. If there's idle or delay at any part, you should consider restarting this level.
Fortunately, the first five dishes are fixed (for single players), so you can exactly follow (or improve) what I did on the first five dishes. You can also look at the places where I cross between rafts, because they are safer and easier (unless, of course, you're seeking for world-record attempt).
Whenever there's dirty dishes, you must always bring it to the sink and clean the dish. This is what you should prioritize first, because you can't throw the plates easily (due to design of this level). Then, keep cutting the ingredients so that the deep fryer is always used.
If you do it right, you should be able to serve enough dishes to get 4 stars. Practice makes perfect.
Hope you enjoy this video. Stay tuned for more gameplay!
Mister Fudo signing off!