Welcome to Spatopia! Well, at least, as soon as the tub arrives and is hot. You purchased the most recognized name in the hot tub realm - you'll enjoy it I'm sure.
Couple of tips to make sure it all goes well:
Have your electrical sorted out in advance if you can: either use the electrician your dealer recommends, or be sure that they talk to each other. Even if you don't have it pre-wired, at least be sure all parties are on the same page.
Make room - it takes a lot of space around corners and through side yards to maneuver one of theses things on delivery day, so be sure to make as much room as you think it needs, but then go back and make lots more!!
If your delivery team is going to cross lawn or planted areas, be sure to turn off any watering systems and/or sprinklers a day or two in advance. OK - I have friends from the north east, and they laugh at us Californians for even HAVING sprinkler systems, but if you do, you want to be sure they don't come on just before the tub gets moved in. If it rains heavily, be sure to allow for rescheduling, or let the dealer know if your path to bliss is all concrete, etc.
And take pictures for us to see!
May you soak long and prosper.
