Jill - I may be the one you first heard this suggestion from. We've done it 3 times on the the PG; twice for the Bora Bora motu and once when we rented a car on Moorea. Each time we were able to tell them what kind of sandwich we wanted by choosing type of meat, cheese and bread and exactly what we wanted on it (mustard, lettuce & tomato for us). We also chose apples and cookies and bottled water. For the motu you don't really need to worry about something to drink because there is a free bar with everything. One time I selected my own cookies (macaroons) from the lunch buffet the previous day. I kept them in a ziplock bag in our room refrigerator. We always requested our box lunches the afternoon before from our head waiter in La Veranda. You tell him what time they need to be delivered to your cabin in the morning. They will be there earlier than the time you tell them.