15 days: Manila, Davao, Boracay suggestions appreciated

Hi All

I will be spending 15 days in Philippines and hoping to get some suggestions on accomodation (budget to average), activities, airline travel within philippines etc.

So far my itinerary looks like this: 6 Days in Manila, 4 Days in Boracay and 5 days in Davao. Activities I'd like to get up to while there include: snorkelling, beach/water activities, shopping, nighlife, trekking and whatever else is suggested that might tickle my fancy.

Manila - besides shopping in Green Hills, Mall of Asia and so forth, what activities would you suggest to do or go see while there? Also suggested nightlife (restaurant, bars, clubs that people between 20-27yr olds would go to) What day or overnight trips would ppl suggest to take that's close by Manila? I'm thinking of going to Palawan (hope I spelt that right?!) can anyone tell me about this place and what to do or see there - also how far travelwise is it from Manila (am willing to fly/bus if I must)

Boracay - this is the only place I will need to search for accomodation and was wondering what people would suggest for a budget of around $20-$50AUD a night that's by the beach but not too far from the town centre as well? Also, suggested tours to take (snorkelling, island hopping, day tours etc). Places to visit (restaurant, bars,clubs, etc)? Things to do and see etc?

Davao - Day trips? Places to see and things to do, as above etc? I hear there is a place called Pearl Farm close by and should visit - can anyone suggest accomodation if I do go and what to do and see there?

I was wondering if there are any types of festivals happening between 16 Nov-30 Nov around these areas?

Any tips, suggestions or advice would be greatly appreciated!

Thanks in advance.