Generator use

Thanks everyone! So sorry that I didn’t say it is a 4.0KW Onan generator. Yep, I will change the oil before the weekend trip and I will check the oil level everyday. My generator typically uses 1/2 gallon per hour. I have a 55 gal gas tank, so I will likely fill up once over the 3 days, just to be sure I don’t run low on fuel. I read somewhere that gens won’t run when gas tank is below 1/4 full. I’ve never tested that info though. I know it would be more cost effective to find a cheap park, but this is a situation where a grandchild is having surgery, I’m a nurse and need to be there (at home after surgery) with her, and I have pets that I have to take with me; hence, the generator and AC will have to run the entire time. Also, I use OnaFresh fuel stabilizer as I have already experienced a gummed up gen carburetor from gas with ethanol after sitting for only 4 weeks without starting. So any time I use the gen, the gas with have fuel stabilizer in it. As mentioned, I have used my gen a lot, but just never 60-70 hours without stopping, so I wanted to check what the experts! As usual, you all have come through with flying colors and given me all the information I need! Thanks again.