Sounds like you had a great time , magic mix of surfing/camping and stargazing ahhh cant beat it . If you have a good planisphere or a basic astronomy handbook that has charts they should have a scale on the side depicting the magnitude of the stars shown . Just pick a prominent constellation and work along the component stars until it becomes hard to identify the fainter stars . Using the scale you should be able to estimate the limiting magnitude of the prevailing conditions/area.... enjoy your new scope when it arrives
