My DH is doing a corporate event this weekend so is away for 3 nights. He goes away for work several times a month for 2-5 nights. I work 3-5 days a week depending on demand. Right next door to DCs school so I can pick the up and drop off.
I always make sure we have a food delivery before he goes away so I don't have to keep going to the shops. We eat simple food eg pasta, fish fingers etc. Sometimes it's lonely and the DCs miss their dad although there is less mess in his absence. They are 11 and 8 so quite independent.