When a person gets married a day before Yom Kippur or a day after Tzon Gedalya - does he/she have to fast two days in a row?
I got married on the day after tisha b'av :) and was told not to fast. However, the rav I asked said that there are 2 reasons to fast on the day of your wedding:
- To make sure you're clear-headed at the wedding (i.e. don't drink)
- As a kapparah (atonement)
So for 1. he advised me not to drink, and for 2 he said that I should accept upon myself to fast a short day in the following winter as a kapparah.
But, as msh210 said, you should ask your own LOR :)
Nit'e Gavriel, Nisuin 6:7 says that he doesn't fast the day after Yom Kipur, as his sins are already forgiven. (In 5:1, forgiveness of sins is one of the reasons given for his fasting.) See there for more details. 6:8 says that if it's hard for him to fast a day or two after a general fast day then he can break the fast. (5:3 says the same for every day, but only if it's "very" hard.) He does not discuss someone who marries before a fast, as far as I see. As always, for practical guidance, CYLOR.
Before Taanis Esther:
We got married on a Wednesday evening, the day before Taanis Esther which (in תשמ״ז) was a מוקדם being that Purim was on Sunday.
I asked Rav Neuwirth שליט״א (the author of שמירת שבת כהלכתה) if we needed to fast.
He showed me a (שער הציון (ט״ז in Hilchos Purim - תרפ״ו - that said that we did not have to fast in this case.
After Yom Kippour:
The Kitzur Shulchan Aruch in 146:2 says that between Yom Kipour and Sukkoth the bride and groom do fast.