Double check yourself, before you double wreck yourself. Make sure everything you send to a company, whether a résumé, an email or a portfolio, is good to go. Double check your grammar and wording, and for God’s sake use spell check! This is especially important when it comes to the company’s name. Don’t spell their name wrong and be sure to type it how they type it (e.g. Problogger, not Pro Blogger).
Stand your ground if the kids misbehave. Be firm with the kids. If they try to tell you that their parents let them do something that the parents specifically said not to do (like stay up past their bedtime), err on the side of caution and obey the parents’ rules. The parents will be impressed by your maturity and responsibility and hopefully invite you back!
Referral fees aren’t just for the products you recommend. Perhaps the coolest thing about the Amazon Associates program is that you receive credit for any sale associated with your affiliate link for 24 hours. So, if a customer visits the page of the product you recommended, but then goes on to purchase five more eligible items during that same visit, you will receive a portion of that entire sale.