taxi bill is pretty much always the same - no matter where your hotel is. Always around 20 euros.
If it's a nearer hotel they seem to conjure random extras from thin air.
They don't seem to expect a tip - last year we got to arenal and the clock read 13 euros. Then it just racked up extras till it hit 20.
The farther you go the less extras they seem to add.
I have NEVER worked out the pricing system. I suspect it's a topic for the 'here be maths' section of the forum

We've been at the far end of palma harbour and pretty close to the airport in arenal - both taxi trips were the same price.
There are also busses at the airport - never taken one, but presumably they take you where you need to go.
Dependng on when you fly in, there might be other slingers around going to the same hotel.
When you land, hang a sling round your neck and if there's anyone around they'll spot you and say hello

(or 'hola' or 'guten tag')
Unless you're flying out at an ungodly hour of the night the bus will usually drop you at the airport for the flight home. One reason it's best to fly back on the monday - as we all get dropped at the airpoirt en masse

Depending on where we'll be based there is usually a hotel for the first night until the bus in the morning. Sometimes we're based along the harbour, sometimes we're further inland.
Best hotel we had was in ses salinas - cracking place, great food !
Whereas last year we were in a real shithole with awful food.
But we did find a superb restaurant very nearby.