Depends on the type of model it is, a lot of the time. Anime egirl/eboy-styled avatars tend to be some of the worst offenders (often kitbashers who don't know any better), while furry avatars tend to be really well optimized most of the time.
If you aim for medium, that's generally sufficient.
The context of this sign being in a sushi restaurant would be the key here. In higher-end, "omakase" sushi restaurants, you'll be served a set of sushi piece by piece as the chef makes it in front of you. Typically you'll want to eat it as soon as it is placed on your plate.