Why not do it at home and then you can make the food yourself and ensure it is infant friendly - finger sandwiches, fruit, mini muffins, etc use your little ones toys and make it a homely occassion
for the balloons and decorations and setup we always do our own , we buy from party center in garhoud they have a wide selection.
since we have a space in our yard , we ordered inflatables and soapy stadium ( DS is 11 ) from top star uae
http://www.topstaruae.com , the prices are very competitive compared to other companies
we usually order our cakes from WOW sweets in Jumirah , however very disappointed with the last two cakes we ordered , they are not fresh and the quality of their cakes went down