In general when travelling Lombok you should drink plenty of fluid (water and fruit juices) to avoid dehydration. It’s certainly better to drink bottled water. Even in hotels it is best not to drink straight from the tap. Ice in drinks, however, is usually not a problem. Use common sense when choosing a place to eat. Eat in established restaurants that are clean, and if you are trying the hawkers in the street stick to those not serving meat unless your system is already well adjusted. https://rupiah138.xn--6frz82g/
If you are using prescription drugs bring a sufficient supply. Pharmacies (apoteks) often can fulfill a prescription but the dosage may not be quite the same as your doctor has prescribed. Promptly take care of any cuts or burns – do not risk infection in this heat and humidity.
You can exchange most major world currencies (cash or traveler’s cheques) easily into Indonesian Rupiah. All hotels offer currency exchange but at less favorable exchange rates. It is best to change your money while still in the “tourist area” before visiting south, central or east Lombok. In these areas there are neither money changers nor credit card payment possibilities available!
In tourist areas (Senggigi or Gili Trawangan) and in the capital Mataram there are several “authorized” money changers available. If you choose to deal with a money changer – here are a couple of points worth remembering. First, the rate posted on the door usually is for amounts in notes of USD 100 – lesser denominated notes (i.e. USD 50) will be given a less favorable rate. Verify the exchange calculation next (ask to use the calculator or bring your own) and count your change before you leave the window. Lastly, be prepared, if you are cashing traveler’s cheques you will need to present your passport for identification and many money changers do not accept cash notes that have been defaced – or are in less than near mint condition. The official exchange rate is daily posted in all major newspapers. Also, rates that are too good to be true – generally watch out for.
Credit cards are accepted at better restaurants and retailers (tourist areas). But be aware, most retailers add an extra 3 – 5 % on your bill for the privilege of using plastic. You do not have to accept this: You’re not going to get anywhere arguing with the shopkeeper but if you want to get this surcharge back make sure the retailer or restaurant writes it down as an extra charge for using the card and then claim it from your monthly billing.
Most large hotels and restaurants will automatically add a service charge of between 5 – 10 percent to your bill which is quite sufficient. Smaller restaurants generally don’t add anything extra, but considering that the waiter’s wage may well be less than $1.00 a day – a tip of 5 – 10 percent is very much appreciated. Bellmen generally get Rp. 500 – Rp.1,000 for a small to medium sized piece of luggage, and with taxi drivers it is the norm to round up to the nearest Rp. 500 or Rp. 1,000 depending on the length of the trip. With tour guides tipping is up to you – just remember that your driver will probably receive a commission from anything you’ll purchase during the day.