My boyfriend’s (of 3 years) sister is getting married next weekend in a very elegant morning ceremony and lunch reception. My boyfriend is the best man, and I’m not part of the wedding party. I’ve decided to write a cheque…but how much is appropriate?

Thank you!

My brother in law just got married 3 weeks ago.It was a small and simple wedding but they had a good size reception about 65 people in a hall and it was catered.They say that this was the civil wedding and that next year they will be having the religious one with a much bigger reception.They are having the second one for show and in hopes that more family members will give gifts since not everyone came to the first one.My husband was the best man at this wedding.Does he need to do it again for the second one?He does not want to be in the second wedding.Also do we need to give another gift?And finally is it wrong to only go to the reception of the second wedding?or maybe not to either one?The first wedding was where we lived and this one we will have to fly out of town to go to.My husband and his brother do not talk very much or get along well.But I am torn at what to do.Any suggestions????