You don't want to show up unannounced, even at your children's house. Don't assume that you would be welcome any time of the year. Remember, they are grown adults and also need their privacy.
If you can't leave your home unattended for the duration of your trip because of pets or the fact that it needs constant supervision, find a house sitter who will help out.
Depending on how long you visit, this could be a condo, Airbnb, or a hotel, precisely because you don't want your children to feel cramped in their space.
Those who have done this saw it as an adventurous experience and highly convenient as they spent some time on the road and could park to enjoy a meal or get some sleep.
4. Try the RV Lifestyle if You Want More Adventure