[TalnSG]

While honesty may not be as easy as claiming allergies to all fish, it would be better. If you should eat something else and become ill, you don't want a physician detoured by being told you are allergic to something unless you really are.

Without even having seaweed, I hope you will be in Tokyo or another large city where you have more options.

Hopefully you like tofu, because its your host family's easiest substitution when cooking.