Chameleon, QR100/pax per meal is quite expensive. I could have a sumptuous buffet in Korean Garden with that :-P

OP- to answer your queries:
1. Laing, sisig, lechon kawali, danggit, pusit.. etc.. (and of course their perfect "ka-partner" or sawsawan)

2.Giligan's,(I hope they could serve beer here too...lol) or Kamayan

3.Al Sadd or Mansoura ( because, most Filipinos are living in these areas.)

4. Price range per meal 15 - 40QR

5.Just make sure the ambiance is good or at least hygienic

6.Nope. Simply because I am bad at singing! haha