....There, it is traditional for the family to cater a full meal for all funeral guests - and there can be very large gatherings to feed. A friend of ours lost her husband and there were over 1000 people who attended the celebration of life with a full catered meal afterwards.
For this reason, it is traditional in the Island to at least cover the cost of a catered meal in the sympathy card. $20 per person is NOT considered a lot for this purpose. Meals typically include two to four meat dishes, rice, noodles, salad(s) soft drinks/coffee/tee, and all in a style appropriate to the gathering (typically, Chinese, Japanese, "oriental", Filipino or a fusion of all/part of these.) It isn't inappropriate to include even more for a close friend as it's understood that not everyone is generous in their sympathy cards. We have often given $100 to close friends at such times. Funerals/celebrations of life are very expensive in the Islands - especially if there is interment rather than cremation (which is much more common.)