Use this word at the end of the sentence or in the end of the sentence

Hi,

  1. Use this word at the end of the sentence or in the end of the sentence? Which one is correct?

  2. I was busy at some weddings or I was busy on some weddings. Which one is correct?

I’ll eternally grateful to you for your help.

Hi,

I would say - 'at the end of '. ‘In the end’ is often used a s a separate expression suggesting ‘finally’. ‘At some weddings’ sounds a bit odd to me. I would want to be more precise and say - ‘attending a number of/a few/ weddings’.

Alan

Thanks - Alan