We were there on Dec 2019 and used public buses. We went to Arashi beach which is farther away, passed Eagle on our way. Buses are very clean and nice. You can buy a round trip card.
https://www.aruba.com/us/explore/arubus
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Arubus N.V. is the major public transportation company owned by the Government of Aruba.
Arubus provides public transportation over major areas of the island. We also provide public school buses and private charters.
Arubus provides different services in order to cater to the needs of locals and our visitors.
The goal is to provide safe, excellent and friendly services to our customers.
Arubus offers: Retour Cards, this card can be used for two trips.
The Baby Beach Card, to be used for transportation from Oranjestad to Baby Beach and/or Rodger's Beach including the return.
Day Passes, valid for one day, unlimited transportation on all the routes of Arubus across the island.
Charters are available upon request at a very good rate."