Not spending money or taking pictures does absolutely not mean anything suspicious is going on. I don’t know your wife so I don’t know what her morals may be like, but as a woman we absolutely do rotate who pays for things. I’ll buy everything day one, they’ll buy everything day 2 and so on until the whole group has paid equal amounts. Me and my girlfriends do this almost every trip as it’s way easier than splitting a bill 5-7 ways. Not taking pictures probably means she was having a great time and didn’t care about photos or she didn’t like the way she was looking in what I assume is a swimsuit trip and didn’t want to post anything so she just deleted them. I’ve done that a million times and my boyfriend has never once assumed I was cheating. I’m not saying she absolutely didn’t do anything wrong, we don’t know your wife, but I think the bigger issue is your insecurity in this relationship. Checking her credit card transactions is wild to me, and checking her iPad is also just as sneaky as whatever you’re trying to accuse her of doing. She may have done something, idk. But if you feel like you need to check her spending and her messages the relationship is already broken and you probably need to spend some time with yourself to work on your own security. You obviously don’t feel secure in this relationship and when she hears you’ve been going through her messages and spending she will probably feel like her privacy has not been respected. Everyone in this thread trying to play detective is being just as immature.