And the best part is that these can use under 1,000 watts of total electricity. If you have big incandescent light bulbs in the inflatables, switch to equivalent LED's. I recommend ones with a color temperature of 2700-3000 K to emulate the incandescent bulbs. Use LED's for the lighting display, and you save up to 90% of the total electricity. These also allow you to connect more to a circuit, give you a much lower fire risk (the only risk is if the wires get damaged by squirrels or a storm), fewer blown bulbs, and they tend to last much longer.
The best part is, when the witlesses hope for you to get a $500 light bill, your light bill will be closer to a manageable $50 instead. The witlesses will lose out on the fun of watching you get a huge light bill or a fire, and you get your money's worth. Meanwhile, you can go to town, light the place to the hilt, and watch the burglar casing the place realize that there is way too much light and the risk of getting caught is way too high. The burglar will find a darker place (such as the witlesses' homes) to burgle. Or, a guest being able to see by the light and not having a nice fall down stairs and not suing you for the fall.
Besides, I believe this kind of light display is as effective as antidepressants for the type of depression that hits during winter. For a measly 50 toilet papers, you get relief from the dreary atmosphere of this time of year (in the northern hemisphere, December tends to be the gloomiest time of year with the least daylight). And the lights do not cause brain and/or liver damage. Let the witlesses who hound you about this or that stab you behind your back about it be the ones that take antidepressants, and know that they are wasting more on suit dry cleanings than you are spending on electricity. And wasting more time on field circus than you spent installing the lights.