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Author's Note: This is part one of a two-part story that explores Casey and Alex's introduction to hotwifing and group sex.
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Casey and Alex pulled into the marina and spotted the rest of the group waiting for them. Alex found a spot and turned the engine off.
"Last chance: you sure you're okay with this?" Casey asked with genuine care and a hint of excitement in her voice. "It's not too late. We could say I need the car for the weekend and decided to drop you off."
Alex smiled and grabbed his fiancée's hand "I'm sure! This is going to be amazing for both of us! And the guys!"
They had spent the last few months discussing and preparing this trip. Officially it was Alex's bachelor party; a weekend on a rented house boat sailing from the western marina of Boulder Lake to the southern marina of Heron Lake with his four closest friends. Along the route they would find a spot to anchor for the evenings. The crew included Alex's friends from college, Sam and Tim, and his lifelong friend James. All four of them had become close friends over the years and each of them was excited for this retreat.
Casey and Alex approached the group with their bags and cooler in tow. The three friends smiled but looked confused.
James looked at his watch then gave Alex a hug "Hey man, only a few minutes late. You're lucky it's your bachelor party." He then looked at Casey and hugged her as well. "And... Casey! We weren't expecting to see you!"
Alex spoke up before Casey could provide an explanation. "Sorry guys, I thought about telling you ahead of time but I wanted to surprise you with this. Let's load up the boat and I'll explain everything before we shove off." Hugs were shared between the remainder of the group and then everyone began loading the boat.
...
Soon the group was ready to begin their excursion. The rental company gave them a walkthrough of the boat, providing them with a long list of rules and an overview on driving along the way. The boat they rented wasn't huge, but it was exactly what they needed for a weekend filled with drinking, fishing, and games. Alex, and now Casey, got the master bedroom of course. Tim and Sam claimed the other bedroom with a queen mattress to share. James would sleep in the loft with a full mattress, or crash on one of the two living room couches if he got too drunk to climb the ladder, which was very possible on this trip.
The kitchen was equipped enough to cook anything but the most involved dinners. It bled into a living room with plenty of space for the couches, a dining table, and a large TV. It also contained one of the two sets of controls for the boat. The living room had lots of windows so the driver could see the surroundings.
The front of the boat had a patio with chairs for fishing and a deck that wrapped entirely around the boat. At the back of the deck was a ladder to the roof which had the second set of controls for driving and another set of chairs for relaxing.
The guide from the rental company closed the tour by giving them their keys and wishing them luck on their trip. Alex walked with him to the door and closed it behind him. After that he walked to one of the bags he had left in the kitchen and pulled out a bottle of Captain Morgan's rum.
"Alright fellas" he started as he retrieved five glasses from the kitchen shelf and began filling them each with a double shot of the dark amber rum. "Before we push off I want to explain why my beautiful soon-to-be wife is here with us. It's no secret to you guys that both of us love sex; you've heard some of our crazy stories. But you don't know just how much Casey loves being fucked. She's a complete slut." All three men, unsure of where this was headed, went wide eyed at the accusation. They looked over at Casey who just smiled and winked back.
Alex handed out the glasses of rum as continued. "And that isn't something that is going away just because we are getting married, nor do I want it to. She wants cocks of any size, any hole. We've discussed this between us for a long time now; we want you three to be free to fuck Casey whenever you need. We want to use this trip as a trial run. That means she is ours to use from the time we leave the dock to the time we arrive in Heron Marina. You don't need to ask permission from either of us before fucking her. You are allowed to cum wherever you want, you don't need to worry about pregnancy or anything like that. In fact, she likes being filled with cum so you're encouraged to finish inside one of her holes. You must listen to everything Casey says while fucking her. If she says slow down, you slow down. If she says stop, you stop. You can be as rough as you want but I expect you guys to be respectful. This is my fiancée we're talking about." Alex looked at Casey and smiled. "Anything else Case?"
Casey smiled at Alex then turned to the boys "Alex makes it seem so formal. Just fuck me like you would your girlfriends, guys. I'm horny all the time so just find me if you want to stuff your cock in me. Don't be shy, I want to be this boat's freeuse slut. That's why I'm here."
