Complex sentence: At first, Gili Air (having the most infrastructure at the time) began to transform to cater to this new economy, however, Gili Trawangan soon surpassed it due mostly to its proximity to better dive locations.
Split into simpler sentences: At first, Gili Air (having the most infrastructure at the time) began to transform to cater to this new economy. However, Gili Trawangan soon surpassed it due mostly to its proximity to better dive locations.