At home bikini waxing tips?

Sydney
I am going on vacation to the beach soon and I bought Sally Hansen wax strips to wax my bikini line so I don't have to worry about it at the beach!
I did it about two years ago and it hurt A LOT haha :p but I loved the results and I guess I could say it was worth it! But does anyone have any tips to make it hurt less?
I've looked up some tips but I wanted to see if anyone has any other tips they use. I've read to do it after you finish your period because you're pain tolerance goes down during your period, but I have no choice because I'm on my period up until I leave :( 
And I read also to take something like Advil 30-45 minutes before. Any other tips?!