Hi,
I can give you two views. My husband and I got married in Yosemite National Park and it was absolutely brilliant My parents and brother also came too and it worked out really well. They came out on their own trip and met us in the park for the wedding, then we went our separate ways - worked well for us.
We don't have a huge group of friends so meals before we went worked well. We didn't take my dh children, they understood and just waited for their presents. We also had a small blessing when we came back for the remaining family, but to be honest this was much more for my parents than for us.
On the other hand, my brother got married in Antigua (all inclusive resort). From the photos it looked lovely and the wedding package was included in the holiday. He took both sets of parents, step-children and friends, and they had a big party when they got back for everyone else.
I would love to say this worked out well - however, they fell out with my parents the day before the wedding and have had sporadic contact since (2 years)
Good luck with your plans. I would not have got married in this country, i was happy with a small overseas wedding with just the people i wanted to come. If you decide to marry overseas, decide on what you want, who you want to go, and then inform them of your decision - don't invite people that you really don't want around - and book yourselves into one hotel and everyone else somewhere else