no , it’s means you can come and go as much as you want , just saves you applying for a re entry every time you leave .. if you intend too or maybe leave the LOS on many occasions, then it’s worth getting a multi entry
No .. ( well even if they did you’d have to go back to the airport the next day anyway to collect it , longer if you did it on a Friday ) but I’ve never heard of airport immigration doing anything like that .
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