Ah yes, the guest list. This is one of those areas where you're REALLY not going to be able to please everyone. Unless you give an open invitation to your entire church or social club and everyone else you know, there will be people who won't be invited. If you think someone feels hurt that they weren't invited, simply be honest with them and tell them that you had a hard time narrowing down the guest list, but that you just couldn't invite everyone you love - thanks to the budget and the available space. But yeah, don't stress over this. Be sincere and you're good.