1) When princess is licking over Stevens’s arms and chest with her rough tongue will she be removing any body hair from Steven?
No, because she will be washing him as she would a baby, not enough pressure to remove hair.
2) Steven must have had to control himself as he felt the raspy tongue on his belly and chest so that he did not burstin
I'm not sure what you mean by this one?
3) I would imagine that the fact that Stevens swim trunks were still damp with sea water that would have made them a bit more appealing to lick over?
Yes, damp cloth is more appealing than dry.
4) I imagine that Steven would be a little worried at first when Princess started to lick over the bulge in his red trunks?
He might be concerned about what she would do next. He was probably ready to jump up if he needed to.
5) Could princess have fitted the bulge in the trunks into her mouth and possibly continued to lick it, possible pulling it a bit further into her mouth?
It would be possible for her to fit it in her mouth, but if we want to stay realistic, she wouldn't have. When a mother lion licks the genitals of her cubs, the purpose is to get them to urinate. When young, they can't until the mother stimulates them this way. Of course, if we don't want to stay realistic, yes she could pull it in a bit further and slurp it a bit more.
6) Would Princess notice that what was inside the trunks had grown and would it move with the power of her licking over it thru the tight material of the trunks?
She would notice, but wouldn't comprehend what was happening since it wouldn't be like anything that happens to lions.
7) Steven must have been glad that no one was close enough to see what was going on?
Yes, it would have been very embarrassing.
8) When Steven climaxes after the last big lick, what might Princes think if she returned to licking there again before going for a swim?
Most likely, she would think that she had stimulated urination as she would have with a cub, but that it tasted quite strange.
9) If Steven had decided to remove his swim trunks given that the beach had been deserted , what might Princess have done then
She would have thought nothing of the nudity, since a lion has no concept of that. Everything would have proceeded the same. However, the rough tongue on Steven's bare skin might have been irritating, rather than pleasant without the buffer of the trunks.
10) Would she have reacted differently to what had been in the trunks?
She probably would have licked more thoroughly, if Steven allowed it.