I don't have a Wii as yet, I am purchasing mine today but you will need batteries for the remotes. Hopefully they will come with the entire package in the same way as when you purchase a new TV or DVD player that has a remote. I don't know if batteries come when you purchase extra controls but it can't help to buy a small pack of batteries. As for cables those come in the box. Your local Best Buy or video game store might be of better help.
If you want to hook it up to the internet through a wired router you'll need a Wii Lan Adapter $24.99 + $5.00 shipping from the Nintendo website. You'll also need an ethernet cable of the proper length to reach your router. If you have just a wired modem you'll need to order another part which I didn't price because I have a wired router. In that case you'll also need an ethernet cable of the correct length to reach your modem. If you have a wireless router you're in luck because you shouldn't have to purchase anything additional to get on the internet .
The new remotes come with the motion plus in it, the older ones you have to hook onto the bottom of the remotes. You use them for a variety of games, with the older ones, we just keep it hooked on all the time. You need it for most of the games on the resorts cd I believe. If you don't have it, you can't play some games, it's not just for games you swing though.
What do I have to do to get Netflix hooked up to Wii. I don't see anything that states I can access Netflix with this bundle but all the other websites I checked stated clearly I can get movies through Netflix.
The controllers do come with two double A batteries to operate them. However, there is an EXCELLENT charging station that I personally own & highly recommend. It is a magnetic induction charger that holds the remotes in place with a small powerful magnet and charges it just by having it stuck to the magnet using electrical induction. The charger will charge the remotes through the protective rubber sleeves that are on the remotes. Most every other charger requires this to be removed, which is a major hassle. The chargers are available in white or black and you can get one that holds 2 or 4 controllers. Not to mention they look fantastic. Here is the link to the charger; Nyko Technologies 87054 Charge Base IC for Nintendo Wii
some games require the nunchuk and some don't. The numchuk plugs into the wii remote and allows you more input into a game. The sports cartridge that comes with the wii has boxing, and the nunchuk is used in the nondominant hand for that game so the console senses what both hands are doing. For wii resort, the nunchuk is used for archery - you hold the remote in the one hand like a bow, and you draw the bow string with the nunchuk (numchuk also has a trigger button and a directional button. But the nunchuk isn't needed at all for bowling. When you buy a wii game cartridge, usually there are icons somewhere on the box that shows how many wii remotes it will support (usually 1, 2 or 4) and whether or not it needs numchuks. For some games, the nunchuk is essential to help navigate or switch views. While four remotes come in handy when you have a group bowling, we haven't needed more than two numchuks. Since one nunchuk comes with the console normally, you find yourself purchasing one more nunchuk.