LW 1: Don't think about it in terms of giving/receiving an eye for an eye. That's bad juju for the bedroom! It opens the door for resentment later down the line. Even if one person is the focus of attention, the other should genuinely enjoy the process of making their partner feel good. It's not like bj's are the be-all-and-end-all of sex. If you try it and hate it, experiment with something else.
The shower idea is a good one. All skin tastes like clean skin in the shower. Also: take it slow? Use your hands first? Even try it over a condom to get used to the sensation (although, really, if taste is the issue, the latex may taste worse)? Maybe a flavored lube (or honey, or chocolate sauce)?
LW 4: Talk with your boyfriend. Figure out to what extent forming a bond with your partner's family is important to forming a relationship for the both of you, and in what ways you both need to compromise. From your letter, it sounds like he's expressed that he thinks it's important that you spend some time getting to know his mother AT LEAST every so often. It also sounds (and I could be wrong!) that you could take it or leave it.
If a weekly thing really isn't happening, you could say that your schedule is going to be hectic for a couple of months and suggest a standing, bi- or triweekly date. Start peppering your conversations with comments about how busy work/school is for a bit before you suggest the standing-date idea. Ask your boyfriend to do the same. Hopefully you'll find a balance.
If your radiators are anything like mine (ancient and covered in dust-harboring tiny wrinkles from decades of being painted over incorrectly), it may be helpful to take an old toothbrush to the crannies before using the cleaning solution. My fingers couldn't reach the little pads of baked on dust on the back of the bottom of the coils (tmi?).
I got sandals that look like those DV ones above from Target that - no lie - look exactly the same! Same colors, same stripes, same shape. Plus they had them in black. They were $20 regular price, which was probably more impressive when the DV ones weren't on sale...