Choose a base around the holiday you want
Start with what you want to do on most days. If a beach walk is a daily priority, compare the coastal areas. If art museums and trips around Ubud are central to the plan, give Ubud its own part of the stay. A week can work with one base or two; every additional move needs time.
Separate the entry requirements
Your passport and visa, All Indonesia arrival declaration and Bali tourist levy have different purposes. Use the official services linked in the detailed guides, and keep the resulting documents available when you travel.
Make the first evening simple
Have your accommodation address, check-in arrangements and a way to contact it offline. Plan a transfer that fits the passengers and bags. Do not reserve a tightly timed activity straight after an international arrival.
Keep control of your spending
Build a budget using your actual flight and room options. Compare total prices with luggage, meals, extra beds and cancellation conditions included. Keep emergency contacts and your insurance details somewhere you can reach without internet.