northern indiana pizzeria memories pizza opened thursday to a full house of friends , regulars and people wanting to show their support .
kevin o'connor closed the shop after backlash following comments he made that he would n't cater same-sex weddings .
o'connor says gays are welcome in his restaurant , but he would decline to cater their weddings because it would conflict with his beliefs .
a crowdfunding campaign started by supporters raised more than $ 842,000 with donations from 29,160 contributors in 48 hours .
o'connor said he has n't received the money yet , but said he plans to give some to charity and use some money to make improvements to the restaurant .