Moochdockers are usually welcome over the holidays. However, it's a good idea to know the rules of good moochdocking conduct.
Don't assume it's okay to show up with your rig and camp out. Instead, ask your hosts if it's okay to bring your RV.
Make sure to ask where to park; if it's okay to hook up to power and fill up with water; ask if you can do laundry and/or shower in the house; ask where to put your trash; and make sure your pet is welcome too.
Helping out with chores like cooking, babysitting, dog walking, or snow shoveling will make you an easy guest who will be welcome back next year.
If you're staying with friends or family, they'll appreciate an offer to help contribute to their electric bill for the time you are hooked up.
Try to keep your stuff contained in your RV as much as possible. Don't put bags of trash outside the RV for animals to potentially get into.
Remember that Cousin Eddie scene in Christmas Vacation? Don't be that guy. Arrive with empty tanks, and if they get full, take them to a dump station to empty.
In some cases, you can hook up to city water when you moochdock. If temperatures are below 32º F (0º C), you'll need a heated water hose for this.
Usually, it's easier to fill your freshwater tank for a short-term stay. That way, your hose won't be in anyone's way. Fill your tank with a drinking water hose to avoid introducing chemicals and mold into your water supply.
It's always a good idea to use a surge protector to protect your RV's electrical system, just in case the power supply is wired wrong or the power isn't steady.
Make sure the outlet has 120 volts and not the 240 volts that is normal for a residential 30-amp power outlet. Use a digital multimeter set to AC to test the circuit before you plug in.