What's a tablet like for things like up dating blogs/posting photos?
You can get an SD card reader for the iPad that will allow you to transfer photos of your camera's memory card. I think you'd find Android to be more flexible though ... but a laptop will be even more flexible IMHO.
If you do get an iPad, look at dx.com for a less expensive option for the SD card reader.
Can the photos off my camera's SD card be easily transferred to the tablet for uploading? (This is my main concern)
As above, IMHO, order of preference is laptop, android, iPad (but I'm sure others will disagree).
Is it a pain typing on a tablet rather than the laptop keyboard.
If I need to type on a tablet for any more than the odd email, I'd be looking at getting a bluetooth keyboard, or, preferably, one of those cases that includes a keyboard ... but then you may as well use a laptop!
Are tablets heaps more energy efficient than laptop?
Yes. Ultrabooks are pretty good though. But if you've already got a laptop, see if you can get a 12v charger for it off eBay and go with that.
Any other pro's and con's. Impress me with your knowledge Myswaggers...
An ultrabook would be my first choice. Flexible, efficient, light and they're reasonably priced too.
Regular Win 7 laptop with a 12v charger would be next, for reasons of flexibility.
Then an Android 4.0 or 4.1 with a keyboard (or keyboard case) ... you'd probably want a Bluetooth-capable unit to get the keyboard working, and a GPS in the unit would be nice.
I find the iPad a bit too "Apple" for me (great if you want to do what Apple thinks you want to do, but a bit restrictive if you want to do anything else).
Disclaimer: I've been in IT for more years than I'd like to count, and I've always been in the Microsoft camp.
Mind you, those Macbook Airs and the Macbook Pros with the retina display are pretty bloody nice, and running virtualisation software on one of those to give you access to Windows apps is the best of both worlds. But don't tell anyone I know that I said that!