If you are traveling to Tuvalu then you will note hat there is no British representative in the country. Most visits to the country is trouble free however the worst weather is usually during November to April being their cyclone season. If you have lost your passport while there the Tuvalu authorities can issue emergency travel documents for you to get to Fiji. You need to seek assistance at the British Embassy in New Zealand.
Importing drugs or selling drugs is illegal much like anywhere in the world. The punishment for drugs is harsh. (See: British in Prisons Abroad). Note also that Homosexuality is illegal in Tuvalu and you can get a 14 year prison sentence for this.
You do not need a visa to visit the country for up to 1 month. You have to apply for an extension of stay which will allow you to stay in the country for 3 months. You will need to contact the following people in country for this extension of stay:
Chief Immigration Officer (acting)
Department of Immigration
Private Mail Bag
Vaiaku, Funafuti, Tuvalu
Telephone: (+688) 20240
Note also that they will allow you to travel in and out of the country on emergency documents if you have lost your passport.
There is only one hospital in the country which is located in Funafuti. The islands are served by trained nursing staff. The medical facilities are good for average health issues however anything serious you would need to get a medical evacuation to Fiji. Make sure that you have travel insurance before you enter the country. Dengue fever is not uncommon in Tuvalu. If you need assistance while in the country you need to dial 911.
Note that there are no ATM’s in Tuvalu and you would need to have cash. The country uses the Australian Dollar for transactions.