The light is very strong - so low speed films can be used during the day. It is probably safer to get film developed when you return home, unless you are to be away for long periods of time when the heat could affect the film, especially if not stored in a cool, dark place. Do make sure you have a good camera bag for protection against bumps, dust and damp. Waterproof cameras can be fun in the Galapagos. Telephone The telephone system is overloaded and can be very frustrating.
Local calls are cheap and national and international ones expensive.
Always check prices before using the telephone at hotels, as they often mark up international and long-distance calls considerably. If you have a BT Chargecard then it may be worth taking it. The international code for the UK is 44. If you have your own mask and flippers then take them in case those provided don't fit.