Do you have to get an appt for a wax or are there any drop-in sessions? I find that babies have a radar for anything booked lol.
I get my hair cut - well the one time I've managed it so far - at a supercuts place where you turn up and wait.
The other thing to note is that normal grooming rules don't really apply here... no-one is going to notice whether or not your bikini line is freshly coiffed (unless you have one of those high leg 80s numbers).
A) everyone else is too busy trying to juggle a baby into the layers of poo protectors, watching baby like a hawk while walking backwards to lockers (while dodging other babies and baby stuff), and then getting into the pool.
B) anyone not doing the above is fretting about their own cellulite/stretchmarks/wobbly bits/huge boobs to care about anyone else's bikini line.
The exception might be in France though - male eyebrow grooming? I have to say I miss DPs metrosexual tendencies. He's let himself go a bit.
Or if you're going with your hubby.
Otherwise, don't worry too much - as long as your pits are smooth enough (there's lots of holding baby up etc) you'll look fab :)