We havent book ski package either. Travel agent phoned Inghams who confirmed ski/boot hire can be done through reps at resort (allegedly at brochure prices!)
your rep can do it for you in the resort a few people did that last year. just go to the meeting and ask them, if not you can get it from the ski shack I think.
Have to say Inghams wasn't so cheap for a ski pack £165.. i saw on a earlier link that Fraiser and Sarha new someone out there who could organize it for you.. find the post get the email and away you go...