Visiting Canada (tourist)?

my family and i have been given a gift by my aunt (80 years old, leaves w/ us here in Manila) to visit vancouver this whole month of May '08. airfare and pocket money will be provided. full board and lodging will also be provided by our relatives there. Aside from the requirements by the Canadian Emby here in Manila, are there any other supporting docs that we need to present together w/ our application to convince the emby that we are really coming back to the Philippines after a month? My husband and I both have a job here and we have 3 children below 8 years old. Hope someone could give me an expert advise....tips...thanks!