I believe ST ENT 'Fusion' had one of the rogue Vulcans (Kov?) either answering yes when asked by Reed/Trip if they only had sex every seven years or telling them they only had sex every seven years and they were trying to speed up the cycle. I did a facepalm at that scene.
"There's a thing that was terrible - I vaguely recall - though it might have been something else - anyway: terrible!"
KOV: Is it true you mate year-round, with any of them you choose?
TUCKER: You haven't been around humans too much, have you?
KOV: You're the first we've met, but I've heard a lot of stories. Your people indulge their passions. Do you really eat six meals a day?
TUCKER: More like three.
KOV: And what about sleep? I understand you spend more than half the day in bed.
TUCKER: Eight hours. We sleep for eight hours. In my case, about six. When we're through here maybe we can get a bite to eat. I might be able to clear up some of your misconceptions.
Note the remark about humans "indulging their passions". Note too the comment "any of them you choose" - obviously a contrast to the Vulcan practice of arranged marriages, which I don't think anyone has suggested is biologically determined.
The following is perhaps more specific to the topic:
KOV: We were just discussing Vulcan mating rituals. Most of my people are extremely uncomfortable talking about such things. So many inhibitions. Vulcan males are driven to mate once every seven years.
TUCKER: Seven years?
REED: Frightening.
KOV: Over the past few years, we've been developing methods to accelerate the mating cycle.
Note that Vulcan males are "driven to mate" every seven years, not "can only mate" every seven years (although the humans in this conversation understand Kov to mean the latter). But if we bear in mind the previous conversation about indulging passions, I think it's obvious that Vulcans are
socially prohibited from sex outside Pon Farr, but not biologically inhibited.
Sybok and the 'rebel Vulcans' From ENT obviously rejected Surak's teachings, they wanted to feel emotions.
The "rebel Vulcans" didn't reject Surak, but claimed that he had been wrongly interpreted.
(BTW, the Vulcans at the time of ENT followed a corrupted version of Surak's teachings. In the season 4 Vulcan arc, his true teachings were brought to light.)