Our DC's godparents are family friends who send birthday and Christmas presents and see our DC when the two families get together, but don't generally make specific arrangements to spend one on one time with the relevant DC. I wouldn't really expect them to - they also have children to look after, busy jobs, limited annual leave etc. I have never considered that their level of involvement or lack thereof was unusual.
My DH also has a godchild but this godchild's parents seem unhappy with this level of involvement. They comment often that DH hasn't spent enough time with his godchild and whenever we visit, perhaps twice a year due to distance, they push hard for DH and his godchild to go off and do things together for the day (leaving me to look after our young children, of course...) We are at the point where DH is using his limited annual leave to go and take his godchild out for the day. I feel that we just don't have enough leeway in our lives right now to accommodate this. I haven't slept more than 3 hours in a row for months and would absolutely love a break. AIBU and precious? Is this just a basic requirement for godparents? He became a godparent before we had children of our own. I'm not sure we realised how little time we'd have once kids arrived.