Hi Yajaira,
What a fun vacation you are planning, to visit Walt Disney World to celebrate your little ones' birthdays! I am happy to help you to consider where to stay for your upcoming trip. You are considering two wonderful resort hotels.
Disney's Polynesian Village Resort features a lush tropical theme.
Disney's Contemporary Resort is sleek and modern. I have stayed at and truly enjoyed each of these resorts.
Since you mention that distance to
Magic Kingdom is important, I suggest that you choose Disney's Contemporary Resort for this stay. While you can access the Magic Kingdom from both resorts by boat and monorail, from Disney's Contemporary Resort you can also walk to Magic Kingdom! This can be a wonderful benefit when you want to zip right out of the theme park and head to your resort hotel room. The walk is only about 10 minutes.
You are of course welcome to dine at any Walt Disney World resort hotel that you choose, but it will be very convenient at Disney's Contemporary Resort to have a celebration meal at
Chef Mickey's. This fun character meal, featuring Mickey Mouse and his friends in their chef gear, would be a wonderful place to celebrate second birthdays! Please do note that all character appearances are subject to change.
I hope that these thoughts are helpful for you, Yajaira. Please do let us know if you have any further questions!