Melissa! You will find lots of information here that will help you to make your desicion.
Probably everyone who wanted a DW had to deal with these questions initially. Will the loves ones come, will they be able to afford it, how should we plan out the whole trip, etc, etc... The truth is, not every one will be able to make it or can afford to make it. But this will be true even for traditional weddings held in the states.
So like many of the other brides-to-be did, we chose a location that is most affordable to travel to. An all-inclusive resorts will keep your wedding costs down and less hassle for all the plannings and guest travels. For us, we will be spending a couple days before and after to hang out with the guests and then move on to the honeymoon. The amount of mingling is totally up to you. After all, all the guests should be able to make a vacation out of it on their own. So really, look at what's important to you and focus on those things...
Good luck and let us know what else we might be able to help!