In the past we've given £100-£150 for close friends where we've attended all day. This Saturday we're going to a colleague's (of mine) evening do and DH wrote a cheque for £100 to put in the card I bought which I think is too much. We can afford it, but I think it's more than 'normal' and would sooner give £50 or a bottle of nice champagne. DH thinks I'm being ridiculous as the bride's father (groom is my colleague but we know them both) is minted and wedding will have a free bar so we should pay our way. No travel or hotel to pay, bar a £20 taxi. Thoughts?