I'm more confident talking about restaurants than I am about fisheries.
My sense on restaurants is that you may see turnover of restaurants. Some restaurants may close. Others will open. However, I think that this idea of trying to keep wages low and fill positions at low wages to keep restaurants working in smaller areas is ultimately self-defeating. If the wages were to rise, young people in those regions would be less likely to leave.
I think it would be better to keep the temporary foreign worker program out of the service sector as much as possible.
What's unclear to my mind is that whether fisheries are the same as agriculture. I don't feel like I know enough about the fisheries sector to know for sure, but I think that's the question in my mind.