My OH and I are from different countries (currently living in his), and our guests are more or less evenly split between his country and mine. Whichever country we chose to get married in, 50% of the guests would have to travel from abroad to attend. That's not something that we could get round unless we had two separate weddings, which we didn't want to do.
We chose to get married where we live, and where a large number of our friends and my OH's family live. I am glad that for those people the cost of attending the wedding will be minimal. As for those travelling from the UK, I am hugely grateful that nearly everyone we have invited is coming, and that they all seem to be pretty excited about it. Only one person has mentioned the cost of attending, which is my aunt. OK, she and my uncle are paying for themselves and their three children to attend, so it will cost a lot. But at the same time, they have massively faffed around and waited until the last minute to book their travel and accommodation, so they have made things worse for themselves than they really needed to be.
We do not have a gift list because I don't think people should be obliged to spend even more money on us after already having paid so much to attend.
If anyone can't attend due to money, we will not make an issue of it.
People will be properly fed and watered all night and there is an open bar so no question of people having to pay for their own drinks on top of everything else.
We live in a popular travel destination so quite a few people are planning to spend a few days and make a holiday of it.
I told my bridesmaids I wanted to have the hen do in London so that nobody is having to travel abroad twice (once for the hen do and once for the wedding) and they were under strict instructions to keep the cost of accommodation and activities down as much as possible.
In short, yes it matters. We want to make it as easy as possible for people to attend, and we want to make sure that those who have made a huge effort to get here have a fantastic time and a night to remember. It is going to be expensive for some people but we have done the best we can.