I'm new here and I realize this topic is dated now, but I thought I'd post because I sort of freshly stumbled into the Greek pantheon.
I'm an eclectic Pagan, always have been, always will be, and am a faithful worshiper of Bastet and an amalgamation of various mythic sea serpents and oceanic spirits I've come to deify and call Leviathan -- he's kind of the big boss, as it were. Not because Leviathan is a jealous god and demands it, but because I feel drawn to him the most.
But after I let a lot more joy and hedonism into my life, I began to realize more and more that Dionysus had carved out a chunk of my heart while I wasn't paying attention. Ironically, I don't like the taste of wine (though I love grapes, so I replace wine with grapes for rituals), but I like getting tipsy enough to lose inhibitions and worries (I don't get drunk -- not as an insult to Dionysus, but because when I'm drunk I get lethargic, ill, and miserable, the opposite of what he would want me to be). Only at age 30something did I go from someone who would wave away club invitations with "I don't dance" until I realized that while I do dance incredibly poorly, I love to dance. And I love the dramatic arts, and the wildness in my heart, and the way drink and dance and performance let that wildness take over my senses. No fears, no inhibitions, just the raw present and pleasure. That sort of spiritual revel that gets associated with him is no lie. It's beautiful. I know it's not for everyone, but it's helped me live more joyfully and fearlessly. It's unshackled every part of me.
Leviathan taught me to be powerful and how to be in touch with my animal nature, how to be confident in my own nature and understand my own strength and power. How to survive. How to buck and ruin those who would try to bind me. And that's very crucial, of course. But Dionysus taught me how to celebrate, how to dance while the sky is falling, how to forget everything and reshape the world around me in frenzies of creativity and unthinking celebration. They're both two parts of a beautiful whole.
I've been thinking about Poseidon a lot lately, too. I feel a certain kinship with horses - his sacred animals - and I'm obsessed with the ocean, with lakes, seas, water in all its forms. I think there might be something there. I tend to open my heart and see how the gods react. Just as Leviathan took me under his coils and Dionysus snuck up on me, if it's meant to be, Poseidon will make his claim. If it's not, he won't. I will not impose on the gods.