Re: Western foods / Gluten free foods
I am also diagnosed with celiac disease and I used to travel Mauritius a lot - no problem.
At the hotel it will be easy with suitable food for your son. You just mention to the F&B manager to take care that your son will not be served anthing that contains wheat flour etc. When there is a buffet, you will be shown what your son can and and what not. Fruits, vegetables, rice anyway are "clean". In Mauritius it is not so much known to add thickener to sauces with meat or fish. If they use thickener, they usually use besan, a flour made of chickpeas; same to put a cover when they fry things.
Only problem might be breakfast. Dietetic gluten free products like bread, rolls, biscuits, pasta are not available in Mauritius. So better you take them along. You may try with your airline to be allowed some excess luggage for medical reasons - get a medical certificate from your physician or gastroenterologist that your son suffers from celiac disease and therefore is dependent on a strict gluten free diet. Produce this medical certificate when you apply for allowance of excess luggage. Also take such a medical certificate with you in case customs in Mauritius should ask for it.
Be careful with biscuits in Mauritius. I had read about some biscuits made of maniok - which would not have been a problem. However, when I went to visit the bakery, I realised that they make the biscuits of maniok but use wheat flour to avoid that the pastry sticks to the table. Furthermore, they use wheat flour mixed with water as a "glue" to close the packets to make the paper stick together.
Anyway - take you breakfast rolls, cereals, bread along; lunch/dinner at the hotel will be taken care of by the hotel.
AND ENJOY MAURITUIS.
Btw - when will you fly???