You should not get involved with drugs of any kind. Penalties for illegal drug importation and use are severe.
You are required to show some identity if requested by the police. You are allowed to carry photocopies of the relevant pages of passports. You should store the originals in a safe place to avoid loss or theft. You should leave details of travel plans, passport, credit cards with friends and family in the UK and enter next of kin details into your passport.
Philippine law on paedophile activity is severe, and strictly enforced. Severe penalties can be passed in child abuse or rape cases. A child is defined in Philippine law as a person under the age of 18. Entrapment may also occur where strangers with children have befriended single male tourists; allegations of abuse are then made in an attempt to extort money.