A first-come, first-served basis; priority given to those who arrive or apply earlier.
限定100名、賞品は早いもの順で配布します。
Limited to 100 people; prizes will be distributed on a first-come, first-served basis.
ライブのチケットはオンラインでも先着、つまり早い者順で販売された。
The concert tickets were sold online on a first-come, first-served basis.
配布物は早いもの順なので、欲しい人は早めに並んでください。
Items are distributed first-come, first-served, so those who want them should line up early.