reward claiming can be done as often as you like, but since the limitation hits it there is some implied value of bandwidth being used each time you claim a reward, so unless it's a decent amount it would be better to do it less often. If you have larger amounts the SP you gain should counteract any bandwidth used so that's fine, just don't hit claim 10x a day on any random amounts of 0.001SP from curation votes :)
light on posting, I think it might be better to use smaller amounts of images and possibly avoid 4k hihg-resolution images that are large file size, since there is an upload involved it might be taking this into consideration so you would be able to post 10x as many small images as large HD ones. I think for every giant image you could have 10,000 words under normal computer rules, so they are probably the heavy hitter for bandwidth.
Hope that helps
Thank you so much - that really does help. I know I need a jpg for the first photo, but I can convert any others to pngs. That would help a lot with file size. It's not like we're talking about fine art here (except in my own mind).
And no more chasing after those pennies. I will just do the wallet thing in the mornings and it will be more thrilling if I do it that way. I thought I should unload it any time I saw it had money, but obviously not. Learning curve!