We leave for Aruba in 20 days (can you believe it ~ the year has just flown by

) and now I am thinking of changing our plans - just a little.
We have reservations for dinner at the Flying Fishbone at 5 pm
(sharp)
I had heard that taxis were expensive so I have rented us a car for that day. The plan was to pick up the car - go see some other beaches (we are staying at the Surf Club) do some snorkeling, see the island - but we have a private ATV tour booked - so we'll see the island.
I'm just thinking if we get the car - go to some beachs & snorkle - I will have my eye on the watch to ensure we get the coveted table in the sand to watch the sun set.
I also wanted to do some shopping in Oran. Which means we'd have to be there around 3 pm - not much time to snorkle.
Could I rent a taxi for a few hours - to take us to Oran & then to the Flying Fishbone?? How much would that cost?? Is the bus totally out of the question??
Am I just over-thinking this (I am packing already, making my lists & checking them twice)
Thanks so much!!
Linda