Ditto on skip the tanning booth...use sunscreen instead! If you want to look darker use a self tanner.
With the waxing... my suggestion is don't go overboard with the bikini area - I don't recommend a "Brazilian landing strip" for bikers. You'll go nuts when it's growing back and your're biking! Itch, itch! Not to mention the protective benefits of some hair (keeps bacteria out! Cushions the ride!). In other words, wax enough to look good in your swimsuit. You can wax bikini and thigh and shave the lower leg and still look fabulous for hubby.
I guesstimate you should wax about 3 days before you go - if it's right before you may be irritated and unable to apply sunscreen.
I don't find bikini waxing too painful, but if you do the legs be prepared 'cause the ankle area HURTS!!!
Have fun!