I grew up a military child. We often did not have any relatives anywhere near us. My mom and dad had a close knit of friends. They would trade babysitting nights and days. Picnics were great with lots of kids to play with. I guess you just adapt. I didn't really miss my cousins, aunts etc. It made us appreciate them more and we tried harder to communicate with each other since we had limited time together.

I have my kids now. We are surrounded by family. They have both grandmas close by. They enjoy time with them. My sister has even come to my rescue a few times. However, my best friend is the one who has never let me down. She has 4 kids of her own but she never fails to do all the things that make a differnce. Emergency babysitter, meals brought to the house when someone is in the hospital and lots of love.
Good luck and remember to enjoy the kids when they are little. They grow up much too fast.