I don't know if it will sew jeans or not, it should if you use a size 14 needle, go slowly and don't try to sew too many layers. Since it's been sitting for so long you should take the plate off, the bobbin holder out and oil it before using.
I DO KNOW THIS----You gotsa lotta nerve talking about it being 80 degrees and going to the beach when some of us are sitting in our 3rd day of dreary, drizzly, cloudy gray skies and 50 degree weather with a biting wind blowing. (and a lot of us worse off) Of course we use this weather to do some of our best quilting.
:lol:
You're welcome to use my board name on the border if you want and enjoy the beach.