First of all, lets go thru your list ...
Being Tied up or Tieing her up ... kind of hard on an M table, but I have done it with those fuzzy padded handcuffs. Bringing rope to an MP is just too strange. Better with an SP.
2 MPAs - done that, lot of threads on this, I just have to say that they better be comfortable with on another. Also the table is a restricting factor, so hope that there is a large sofa and lay down some towels ! I prefer one on one
3 MPAs - just a waste of $$$ unless you like to watch. The interaction level will decrease.
Video - would be nice but I haven't tried it in an MP.
Photos - yes I have a couple for momentos.
Spanking - Yes.
Toys - I bought an MPA one for xmas and used it on her willingly, damn that was a hot session. We did some repeats and I brought some others and she was really into it. Especially the vibrating nipple clamps and the RABBIT.
Whipped Cream - Best advice, buy it at a variety store very near to the MP and make sure you use it right away. Those cans tend to get warm as soon as you take them out of the fridge and the cream loses the "structure" when sprayed. Make sure the MPA knows you are bringing this right away, it is definate fun !!!
Chocolate Sauce - great for BS. An MPA mentioned this to me once, and I thought I had to try this, asked her, she said okay and the next session I brought it. We both had a good time but it got a little messy... took my tongue a few days to recover
Now in regards to my fantasy session:
One MPA with no time limit, we both take turns massaging one another, nice soothing Jazz playing in the background, a bottle of merlot, nice conversation, rose petals sprayed over the massage table, a nice scented massage oil (not the cheap baby oil), soft kisses over each others bodies, firmer kisses on certain parts of the body, long licks, short breaths, deep sighs ... just sheer exploration we enjoy each others bodies and are comfortable within limits.
The above doesn't have the extras that you bring, you each bring yourself and pleasure your partner to the best of your ability, its an emotional as well as physical high that put the erotic meter in the RED zone.
Oh ... that MPA is you PS.
VBB