"Hakuna matata" (no worries) is the common say on this island and indeed everybody is really chilled out. Who wouldn't be when you are surrounded with white sandy beach and the Indian Ocean ! Paradise on Earth.
The flight there, however, wasn't so chilled - no direct flight from the UK but we got there with Quatar Airways via Doha. All in all a 15-hour journey but worth it.
I was slightly anxious arriving without a visa but it proved to be an easy process and costed 50. Credit cards are now accepted and no need to take ID photos with you as they have the latest technology to take them there. The whole visa application process took no more than 15 minutes. You then scramble your way out and hopefully re-unite with your luggage.
Before I forget, the US $ and the Tanzanian Shilling are the preferred tender. There are plenty of exchange places in Stone Town but no ATMs once you leave the town so make sure you take enough cash with you (not many places accept credit cards).