Book the harbour as well as the island
The tourism ministry identifies mainland departure options including Sanur, Kusamba and Padangbai, and island landings such as Toyapakeh and Sampalan. Use the actual operator and harbour on your reservation when arranging both road transfers.
The boat’s advertised crossing time does not include check-in, waiting, boarding or the island road journey. A package should identify who handles each stage and what happens after a weather cancellation.
A viewpoint is not the same as reaching the sand
Kelingking is known for its southwest-coast cliff view. The steep beach route is a separate physical decision from visiting the viewpoint; do not assume that a photograph of sand means a simple or suitable descent.
Ask about current restrictions and the actual walking/return effort before leaving the parking area. If you are not comfortable with the route or conditions, stay within the permitted viewpoint area. A booked tour does not remove the need to decline an unsuitable descent.
Choose one part of the island for a short visit
A day trip has to fit around the booked return boat. Select the main stop and nearby alternatives instead of mixing distant coastlines merely because they appear on the same island map. Road and access conditions matter as much as the number of stops.
For an overnight stay, use the location of the next day’s activity and the departure landing to choose accommodation. Arrange return transport before moving away from the harbour, with an alternative if the operator changes the landing point.
Keep marine activities conditional
A snorkelling outing is a separate service with its own guide, equipment, ability and weather requirements. Manta rays, clear water or gentle conditions cannot be guaranteed by an island name.
Return to mainland Bali before the international-flight day and keep enough flexibility for a cancelled crossing. For a shorter holiday, compare a mainland outing with the extra handling and time the island visit requires.