See how it goes, but if you are worried give them a ring, that's what they told me to do. Don't let the attitude of the nurse you saw put you off.
I went in on the Sunday morning as I expected a long wait on the Saturday night with all the drunks. Also I was on my way back from the hospital visiting my Mother-in-Law.
It was quiet on the Sunday so the chap in the plaster room took the opportunity to train another lady in putting on the heavy initial plaster cast. He took a lot of care doing it to make sure it didn't rub, considering it was only on for two days.
When I had the light weight cast put on they didn't take much care at all so I was worried as he had explained the importance of the inner sock being put on a particular way, and they didn't do it with the cast I was to wear for 6 weeks! I was fine and needn't have worried.
Keep your patience that's my best advice it seems a long time to be out of action. Try to get someone to wait on you, I was lucky sitting waiting for my meals and drinks to arrive but I found myself nagging a bit. It is so difficult to bite your tongue when someone does something different than you would yourself.
I found it difficult to walk far using the crutches. My technique for getting upstairs was to put the weight on my knee, I daren't use the crutches I would have fallen down backwards and I am just not strong enough.