Ah yes! We call it Labour Day up here but same thing. For us, we usually take advantage of the last summer long weekend to go camping somewhere with friends. Head to a cottage if that is on the table.
I have a whole post loaded up full of this weekends adventures and will see if I can get to it tonight.
Looks like you had a delicious long weekend and hopefully you are denying the end of summer til the end of September like me!