There is no restriction for walking when varicose veins are diagnosed , what you have to avoid is prolonged standing at one place .Try to keep two pillows under your legs when sleeping , and use compression stockings till groin level everyday in day time from morning to night , this will delay the progression of disease , though not curative option.

Yes you can Wear compression stockings Avoid long standing in one place Keeps legs straight while sitting on chair(use support)

Yes you can Limb elevation while sleeping Compression stocking Avoid long standing