Question on reserve and first come first serve basis

[within]

I understand that certain country like in singapore, they practice reserve those hot model for their Vip Or super Vip,
certain country like in china, they practice must buy those non popular model in order to buy those hot spot model.
there is also country like japan, who work on first come first serve basis. you see first, you grab first. no T&C

Anyone knows other than japan, which other countries practice first come first serve basis?