I've just looked there at smugmug at a glance.
If you just want to get some prints made...do you have to pay money at all for some kind of 'account'?
I didn't get the impression from a quick glance there for simple printing jobs....?
You can try SmugMug for free (for a limited time), but it's a paid service with no free option (far as I know). I joined SmugMug mostly for the printing service, and I wanted the ability to control the prices of the photos. At the time, it was about $100/yr for all the options of the now $150/yr membership.
When friends or clients purchase photos from your SmugMug account, they add the photos to a cart and pay for them through SmugMug. The printing fulfillment is done through third party printing companies.
SmugMug is an excellent service, but I'm not shooting enough these days to make it worthwhile anymore.