If you find out that you don’t have the quest do the next: Be sure, that your version of the game is at least 0.9.0b. If it’s doesn’t help you, try to save the game and load it again. It helps 100%.
On your game load you will face that screen. I added some decisions to the game that wasn’t added before, so just answer the question. It will affect the ending a bit. Choose atlease 2 Yes variants to see the blowjob scene on the beach at afternoon
Beach episode is become available after you finishes the quests:
After quests below is completed you will receive quest Beach party beggins! where you should next:
After quest Beach party beggins! should be completed!
You will receive 3 more quests, which suggests you to invite one of your partners: Mom, Trish or Mirina. You can do it anywhere you will find them:
Invite to the party option should be available for you.
Once, you invite one of them - you not able to invite someone else. The warning message will appear.