Donnie Wahlberg, who just finished mingling with fans on the New Kids on the Block cruise to Bermuda, will appear with his fiancee, Jenny McCarthy, at Avalon at Mohegan Sun after her performance at the casino Friday night. Meanwhile, back in Boston, Jeff Timmons of 98 Degrees will have an after-party for his Wilbur Theatre “Men of the Strip” show at Emerald Lounge at the Revere Hotel. “Men of the Strip,” a male revue, starts at 8 p.m. at the Wilbur. That means Timmons and the guys should be over to the Revere by midnight.Mark Shanahan can be reached at firstname.lastname@example.org. Follow him on Twitter @MarkAShanahan. Meredith Goldstein can be reached at email@example.com. Follow her on Twitter @MeredithGoldste.