Beware of voltage converters which are based on triacs as distinct from transformers that are usually larger for the maximum wattage sought. Voltage converters are ok for short term use but if they get too hot they have a habit of burning out and sometimes burning up. They are banned where I come from.

Another option for the digital camera issue is to download the pictures to a CD-ROM. I was in a small town in Spain two months ago when I found that my chip was filling up fast. I went to a camera store and they had a Kodak machine which enabled me to download 120 pictures to a CD-ROM for about $6.