You will want to put your tub on a concrete slab or PVC decking. Often, there are dealers on UsedSpaLot that offer the portable decking. Don't just set your mower on low and create an opening. Think about sun / shade, proximity to the back door etc..
IMPORTANT - if you plan to set your Hot Tub on your raised wooden deck, make sure it's been properly reinforced to handle the addition of a few tons of tub and water.
You are going to need to run 240v to your Spa. Sure, you can do it yourself, but for less than the cost of a trip to the emergency room, we suggest calling someone that knows state code and which wire is hot.
DO NOT fill your tub until you have electrical run to it. The list of potential problems encountered when doing this would cause us to add a whole new page to this website. Just don't do it.
there are hundreds of reasons why we don't relax in our toilets. Other than it being a tight fit - those same reasons apply to making sure you have clean water. Forgot Chemistry the day you graduated - us too. You can go to a reputable dealer that sells quality chemicals and they can educate you. You can go to the WATERCARE section of this site. It's sponsored by XXXXXXX, and it will educate you on not only what you need - but how much to use. It also has a dealer locator that will direct you to a knowledgeable dealer. While we all love the BIG SUPERSTORES when it comes to buying milk and shampoo - we strongly suggest you don't put your water chemistry in the hands of someone in a blue smock, I think ya know what we mean.
Spa Covers are important. It helps protect the environment from entering your Spa - so you can enter your spa. There are covers you manually pull off (they can get heavy) or there are Spa Covers that have lifts easily moves the cover out of the way.
Steps are nice. Climbing over the edge of a Spa can be like straddling the neighbor's fence. In other words - get some steps. Place for your drinks, chips, towels and of course rubber ducky's. They sell all types of furniture that sets against Spas to hold these important items.