my husband and i had our first swinging experience a week ago. it went so-so but we will do it again

while playing i noticed several things:
- the men i was playing with (2) were not entirely excited and neither was my husband... i mean they were all happy to kiss, touch, suck but their (sorry to be so explicit) dicks were only half hard.
now i realized that i was nowhere near as excited as i thought i would be (and the women that i played with werent all together wet and wild if you catch my drift.
my question would be, is this normal atr first to feel a bit disconnected when there are so many people around? do people usually react like that (all the couples were relatively new at this) until they get comfortable with the people they play with?
i am just curious, i had a great time and the other couples told us that they also did and want to do it again
thanks for your comments