1: Would you rather be tied up and teased or tie someone up and tease them?
I'd happily do either, though being tied up requires less effort.
2: You can either cum any time you wish but you have to swallow it all, or you can only cum once a year but you don't have to swallow.
Cum any time. I've swallowed my cum before, I'm getting used to the taste.
3: Be blindfolded and receive oral but you don't know what gender the person is giving it, or being tied up and and fucked but you can't stop whoever it is fucking you
Again, both sound amazing. I'd go for getting fucked, it's so much more rough and sexy.
4: You can have sex with anyone you want, but they are in complete control of all your orgasms and you have to worship them, or you can be worshipped and dominate, but it's whoever wants to fuck you
The first. There's certain people I'm definitely up to get dominated by.
5: Worship feet or have your feet worshipped?
Worship feet.
Scenario 1: You're walking home one night on your own when you are suddenly bundled into a van, tied up and taken to a secret location. You're blindfolded and scared. Your captors give you a choice, you can be throat fucked for an hour nonstop and take as much cum as possible and be free, or be used as a slave for 12 hours and be freed.
I'd be a slave. Sure throatfucking is hot, but I'd want to stick around and see what else they'd do to me 
6: Tied and whipped or tied and have hot wax dripped on you?
Tied and whipped I think. Though I imagine peeling the wax off would be satisfying after.
7: Worship a couple (suck his cock to get it ready for her etc) or be tied up and made to watch someone fuck your SO
Lacking a SO, i'd go for the former.
8: Eat your own cum or someone else's?
Someone elses. Just for a change.
9: Lick cum off someone's feet or snowball them?
I'd do either, but I'd rather cum in someones mouth. Snowball it is.
10: Tied up Spread Eagle while a group males and females ejaculate all over you, or tied in doggy style and fucked in the ass by strapons and cocks?
I'd go spread eagle because it's probably more comfortable, and my virgin ass wouldn't fare well with too many cocks.
Scenario 2: You've been naughty and cheated on your SO. They've found out and they're pissed! You get given a choice. They'll forgive you if they get to tie you up, put you in chastity and make you watch while they fuck someone else (and you both know it's the best sex they'll ever have), their new lover gets to use you as well but you won't get and pleasure from it. Or, they'll forgive you but you have to violate a limit, get humiliated, and you must deepthroat 5 other guys but once again, you won't be allowed to cum.
This is probably the most difficult. I don't think that, if I had a SO, I would be able to watch them fuck someone else, so I'd go with violating the limit.
Great questions btw!