@jackthebear To answer your question, we use the Blendjet to take to the beach. My husband is a type 1 diabetic. He surfs a lot, 3 hours at a time. As soon as he gets out of the water he needs to eat/drink something. He likes to drink a protein type drink to keep is blood sugar from dropping. Of course the grandkids then want a smoothie of some sort also.
There are many times we have used it. When going to a potluck and we need to whip something it is so easy. I have yet to find an outlet at a park or the beach.
Also, when I worked it was great to have in my office. There were limited outlets and the one's I did have were used for the computer, printer, adding machine, etc.