We decided to do a welcome party and invite everyone, because all but 5 of our 75 (that includes us) guests flew 3+ hours to WDW. With that size the best option we found was a private catered meal organized through our planner with DFTW. We hosted it at Ariel's at Beach Club, and our menu was completely customizable so long as we met the minimum expenditure for renting the room as a non-wedding event (when we booked this in May 2014, the minimum was $1800, though the minimum for a plated meal was higher). If you decide to go the welcome party route and have that many guests I highly highly recommend it - I know we went over the minimum, but had we stuck to it, it would have been about $24 per person, best deal for us on property!